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The August birthstone: the Peridot.

The Peridot is also named Chrysolite or Olivine. The Peridot is a group of stones with the chemistry (Mg, Fe)2 SiO4. The whole group is Olivine with the highest value of magnesium as Forsterite and with the highest value of iron as Fayalite.
In the middle you have the Peridot.
The oldest mine of Peridot is Zebiguert in Egypt.

Dicover our selection of péridots from (Myanmar (Mogok),Arizona - San Carlos -Apache reservation), from Pakistan and China.

We also have "the white Peridot" as Forsterite, from Myanmar, discovered in 2009.

For the collectors there is a choice of Dunilite. It is a rare gem of the peridot family.

And the rarest peridot: from meteorite!

peridot - pallasite - meteorite

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Burmese Red Spinels

New coming of round calibrated top red spinels from Myanmar (Burma).

These spinels are intense red, without any brownish tone, perfectly cut (diamond cut).

Do not miss this opportunity!

Spinelle rouge Click here to see all our calibrated red spinels->

You will also see on this page our pink calibrated spinels

For more quantities, be free to contact us.

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Calibrated green demantoid garnets Grenat démantoide- Russie - Oural ©gemfrance.com We have just update our inventory with some new arrivals.
These green garnets are in the finest quality.

Demantoid is a variety of green garnet (andradite). Etymology : from "adamas", diamond in Greek, because its high dispersion resembles that of a diamond.

It is one of the rarest green garnets. The mine which is the best known is that in the Ural Mountains in Russia. The existence of demantoid garnet in this area has been known since the reign of Tsar Alexander II. Other discoveries of demantoid garnet have since been made in Namibia and more recently, in Iran. The demantoids from the Ural Mountain mines are the most sought after. The colour ranges from yellowish green to an intense green. Demantoid garnets classically show « horse tail » Byssollite inclusions.

-  Click here to visit the gallery->

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Three videos about the aqua marines from Pakistan
one in English, two in French.

When I see this, I think that the price of the aquamarine and other gems are too cheap regarding the life of these men.

Respect!

-  First video in French - Cliquez

-  Second video in French - Cliquez->

-  Video in English

Thanks to Patrick Voillot and Shafquat Hussain.

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More sapphires from France.

We suggest the new French sapphires. They are all collected in a river of Auvergne, in France with pans.

All these sapphires have been faceted in France, a perfect cutting.
These sapphires are not subjected to any enhancement and no heating process. 100% French 100%, 100% natural.

The sapphire from France is very rare. We cannot talk about a production in quantity. It will remain a rare gem. Sapphires over one carat are very rare.

The history of one of these deposits has been traced by Forestier (1993). "This is an alluvial deposit type on river Riou Pezzouliou. The volcano Croustet is the source of these sapphires. The gems from this locality are known at least since the XIII century, and had provided all over medieval Europe, mainly in the Middle Ages as sapphires, garnets and hyacinths...”

These sapphires have been the subject of an article in the magazine "Le Règne Minéral" (mai-juin 2010).

For more information see the scientific study from Eloise Gaillou (DEA Clermont Ferrand 2003): “Mineralogical Study of Sioulot sapphires from Mont Coupet and Meynore".
-  Les saphirs du Massif Central "Etude minéralogique des saphirs du Sioulot, du Mont Coupet et du Meynore".

To see our sapphires, click here->

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A 8.41ct pink diamond

A 8.41ct pink diamond was sold on October 7th at the Sotheby’s auction in Hong Kong.

The final price for this pink diamond was 137.88 millions $HK or 17.8 millions dollars US or 14 millions euros.

It is a pear shape pink diamond graded by the Gemmological Institude of America as "fancy vivid purple-pink".

Pink diamond 8.41ct Sotheby’s Oct 2014

He was cut in New York from a 19.54ct rough diamond.

The previous record price was for the pink diamond Graaf pink.
It is a 24.76ct "fancy intense pink diamond", sold during the Sotheby’s auction in 2010 November in Geneva: $46 million, so $1.86 per carat.

The record per carat is still 10.8 millions per carat for a 5 carat pink diamaond (fancy vivid pink) sold in hong Kong in 2009 January

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A ring with our andesines by Victoire de Castellane, for DIOR

That ring was created a fews years ago by Victoire de Castellane, for DIOR JEWELRY.

But I have waited several yars to publish it. I allow me to do it now as it is yet oublished by others on the net.

bague andésine, nacre, rubellite, Victoire de Castellane, DIOR. Photographie Dior.

The center piece is a Rubellite. The other red gemstones are our andésines.

These gemstones are in a flower made with mother of pearl.

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Terra Garnet

Available on Gemfrance

Buy it for only 98€.
-  Delivery between January 15th and February 15th.

After Terra Spinel, it is the second book by Vladislav Yavorsky.

"A new book celebrating the garnet gems"

Terra Garnet - Le livre sur les grenats

And we still have a few Terra Spinel.

Do not wait!

On Gemfrance it is only 98€* + shipping cost from France; so cheaper than buying directly from Thailand, regarding the shipping costs.

I order->

* without IVA

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Minimum purchase 20€ for retail, 80€ for wholesale.

The minimum purchase is 20€ + VAT for retail and 150€ + VAT for wholesale.

Reminder: The professional Web access is restricted to jewelers, jewelers, designers ... all members of a profession using gemstones.

For the access to the wholesale prices, click here->

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Free shipping:

Now the shipping is free on Gemfrancefor the gemstones, jewelry, diamond necklaces, pearl necklaces, crystals, piwder of gems, golden and platinum nuggets, meteorites. But not for books and DVD.
-  From France: from over than 110€ (300€ for wholesale).
-  For all the other European countries: from over than 150€ (250€ for wholesale).
-  For all the other countries: from over 250€.

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More calibrated rounds rubies in diamond cut

We supply in the finest quality in diamond cut rubies.

The references are RUBI56.. on this page

Rubis - Ruby - ルビー - Rubin - 紅寶石 - rubí -  ياقوت ©gemfrance

We can cut in the finest quality from 0.005mm! All our stones are clean and perfectly cut.

Don’t miss the opportunity!

See the gallery->

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2012 -12 : in Yangoon - Myanmar
Some pictures from my trip in Yangoon.

We have yet put some new stones on the website. More very soon... You can check on the first page very day.

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2012-11-04th: green garnets

Every day we put more stones on the website.
We have a lot of news stones as today these green and green-yellow garnets.

All these stones are clean and very well cut. As we said "Russian cut quality".

grossulaire andradite Mali ©gemfrance.com demantoide Namibia ©gemfrance.com

-  Green - yellow garnets from Mali (grossulaire - andradite)

-  A very nice pair of demantoide green garnet from Namibia.

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Emeraude Oural ©gemfrance.com

2011 December 15th : The Europe’s largest emerald mine reopens in Urals

Moscow, Dec 3 (IANS/RIA Novosti)
Production has resumed at Europe’s largest emerald deposit in Russia’s Sverdlovsk region in the Ural mountains following an idle period of several years. The Ural Mountains, or the Urals, are a mountain range that runs approximately from north to south through western Russia, from the coast of the Arctic ocean to the Ural river and northwestern Kazakhstan.

Beryl, the source of emeralds and the principal ore of beryllium, as well as ores of rare earth metals, were produced at the deposit for defence and nuclear industry needs. But in the 1990s the mine faced financial difficulties due to the cancellation of state orders and neglect by the new owners.

Beryl is a strategic raw material for aircraft and rocket manufacturing, guidance and positioning systems, production of special alloys and other high-tech industries.

Ultimately the licence to the deposit was issued to the Kaliningrad amber plant that maintained it in a safe working condition for the past three years.

The mine will provide 560 jobs once production reaches design capacity.

«For a small mining town, this is a substantial figure. Many social and economic problems in the district will be resolved, and the quality of life will rise. People will feel confident about the future», acting Governor Anatoly Gredin said.

©Ria Novosti, 2012 Dec 3th.


Several experts are saying that we cannot expecting a large production of emeralds in the next future. Closed since 16 years, 90% of the infrastructre is obsolete.

Even if the reopening of the emerald mine will be a success, it will take time to have a consistent production.

We have only a few specimens of these emeralds for selling on our website. Click on the link->

Warning: The emeralds are the precious stones most difficult to photograph for us. We assure that these emeralds are even more pretty in the reality...

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2011-10-30th : The most expensive perfume in the world.

Martin Katz Creates Million Dollar Fragrance Bottle For DKNY To Be Sold For Charity

dkny-golden-delicious - Cliquez pour agrandir.

Be Delicious Fragrance fans, prepared to be dazzled ! DKNY Fragranced has partnered with celebrity jeweller Martin Katz to create the world’s first million-dollar fragrance bottle.

Bringing to life the rich and sparkling aromas of the new DKNY Golden Delicious Eau de Parfum, the apple-shaped flacon is adorned with rare jewels and will be capped off with a unique, round-the-world expedition making its final stop on DKNY’s Facebook page, where it will be available for purchase, net proceed will benefit Action Against Hunger - a global humanitarian organization committed to ending world hunger.

The DKNY Golden Delicious Million Dollar Fragrance Bottle is carved from polished 14-carat yellow and white gold and features 2,700 Round Brilliant White Diamonds weighing 15.17 carats, 183 Golden Yellow Sapphires weighing 2.28 carats in a micro pave setting in 14ct. White gold making up the Manhattan skyline that is so iconic to the DKNY brand. A 2.43 carats Flawless Vivid Yellow Canary Diamond adorns the “cap” of the bottle alongside a DKNY Golden Delicious diamond oval logo.

The Apple sits upon a majestic base comprised of two layers of water white glass between which the 14 carat gold continents of the Earth are set with precious gemstones indigenous to each country. Adorned with 2,909 precious stones sourced from all over the world including : a 1.65 carat Turquoise Paraiba Tourmaline from Brazil, a 7.18 carats Oval Cabochon Sapphire from Sri Lanka, 15 Round Brilliant Vivid Pink Diamonds from Australia weighing 1.28 carat, 4 Round Rose Cut Diamonds weighing 0.32 carat, a 3.07 carats Oval Cut Ruby and a 4.03 carats Pear Shape Rose Cut Diamond. Martin Katz-whose glittery designs regularly grace the red carpet-hand placed each stone in a pattern to mimic the New York City skyline. The process took nearly 1,500 hours to complete, making this “apple” the most regal in the DKNY Delicious Collection.

The DKNY Million Dollar Bottle will be unveiled across the globe from London, to Mexico to Malaysia. Fragrance lovers will have a chance to marvel at the stunning, one-of-a-kind bottle, as it is unveiled. Fans may follow the bottle as it travels the globe on the DKNY Fragrances Facebook Core Club Application. Once the tour is complete, the Million Dollar bottle won’t be stored under lock and key in the DKNY safe-instead it will be sold to enthusiasts with net proceeds to be donated to the global charity, Action Against Hunger. DKNY is honoured to raise awareness for the global fight against hunger. With over 30 years of expertise in emergency situations of conflict, natural disaster and chronic food shortage, Action Against Hunger works to supply communities with access to safe drinking water and sustainable solutions to hunger. The humanitarian organization carries out life-saving programs in more than 40 countries worldwide and assists some five million people each year.

This article is coming from Haute living.

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2010-11-17th A 24.78 carats pink diamond at the Sotheby’s auction. The Sotheby’s Geneva Magnificent Jewels auction on Novembre 16th have included a 24.78-carats “fancy intense pink VVS2” (GIA) emerald cut diamond.
This fancy pink diamond is a Type IIa diamond, a classification that less than 2 percent of diamonds have. It was carried a pre-sale estimate of $27-38 million. That stone was sold $46,158,674. It is a new record.
This diamond comes from a private collection. It has not appeared on the market since 60 years ago. It was purchased by the jeweller Mr Harry Winston.
David Bennett, chairman of Sotheby’s international jewellery department in Europe and the Middle East, said : "During my 35-year career at Sotheby’s, I have had the opportunity to examine many magnificent and rare gemstones and, put simply, this stone is one of the most desirable diamonds I have ever seen. What makes it so immensely rare is the combination of its exceptional colour and purity with the classic emerald-cut ; a style of cutting normally associated with white diamonds and one that is so highly sought-after when found in rare colours such as pink and blue. The stone’s character is further enhanced by the gently rounded corners which impart a unique softness and charm to this truly outstanding gemstone.”
The new owner is the jeweller Graff, from London.

diamant rose 24.78ct ©AFP

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2010-10-26th: A record for a 10.95ct blue diamond AP - This undated photo is provided in New York by Christie’s Images LTD.2010.This 10.95ct blue diamond was sold at Christie’s auction in New York on Oct. 20th;
It is the largest triangular shaped fancy vivid blue diamond ever to come to auction. It is paired with a 9.87ct white diamond in the same shape.
This blue diamond was sold $15.7 million. It is a new record per carat for a blue diamond. diamant bleu 10.95 carats
The ring wa purchased for $1 million from Italian luxury jeweler Bulgari in Rome in 1972.

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We prefer the diamond cut

Amethyste taille brillant -

Citrine

Topaze London blue -

As for Amethyst, Citrine, London Blue Topaz, we have a lot of stones in diamond cut in different sizes.

Click on the pictures...

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The largest Vivid Green Diamond at the Sotheby’s auction : 2.52 ct.Green diamond 2.52ct

An extremely rare natural Fancy Vivid Green diamond sold for USD 3.08 million (CHF 3.1 million/EUR 2.07 million) last November at the Hotel Beau Rivage in Geneva, Switzerland during Sotheby’s “Magnificent Jewels” auction.

Compared to some of the other fancy coloured diamonds up for auction - including a 5.96 ct Vivid Blue named the "Star of Josephine," a 6.63 ct Vivid Pink, and a 74.80 ct Fancy Vivid Yellow diamond - this exquisite green collector’s diamond weighed a mere 2.52 ct. Nonetheless, it is the largest natural Fancy Vivid Green diamond ever sold at auction.

Read more (Kulsen & Hennig GBR)->

To learn more about fancy color diamonds, visit Kulsen & Hennig’s website

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Our gemstones and the designers

We have selected here some designers using the gemstones from Gemfrance.


A ring with a huge 1.23ct blue spinel from Viet Nam - Luc Yen. Création Bucellati - Spinelle Gemfrance

This fantastic ring in the "renaissance" style is made by the famous Italian jeweller Bucellati,.

Visit his website






A nice ring in a personal style by a French designer in Paris Thierry Grave.
A 4.08ct white sapphire with blue sapphires in princess cut. Création Thierry Grave - Saphir blanc

His website->











-  Jewelry designed by Christiguey Création Christiguey
Création Christiguey - Ametrine
Création Christiguey Création Christiguey - Saphirs violets
a belgium artist
Visit her website->








Jewelers using our andesines from Congo

-  Hank B. Siegel de Hamilton Co., Jewelers
Lawrenceville, Princeton, Red Bank, NJ USA
Palm Beach and Palm Beach Gardens, FL USA
hanksiegel@hamiltonjewelers.com

Création Hamilton Co. - Hank B. Siegeli - bague andesine du Congo

Création Hamilton Co. - Hank B. Siegeli - pendentif du Congo
Création Hamilton Co. - Hank B. Siegeli - bague andesine du Congo







-  Jeffrey Appling, a Californian designer. Création Jeffery - bague andésine du Congo
-  his website->







-  A ring with Andesine and Blue Diamond by Patrick Lionnet (Paris).

Création Patrick Lionnet - bague andésine du Congo







-  Two rings by the jeweler Remy (Besançon - France)
-  Son site->

Création Remy - bague andésine du Congo Création Remy - bague andésine du Congo











-  Jewelry by Christiguey Création Christiguey: Andesine et diamant noir
Jeweler - Artist from belgium.
See her website->









-  Jewelry by Laurent Sikirdji Bague andésines Sikirdji

Boucles d’oreilles andésines - Sikirdji
Création Sikirdji - pendentif andésines du Congo



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The Congo Andesine by jewelers.

-  Hank B. Siegel de Hamilton Co., Jewelers
Lawrenceville, Princeton, Red Bank, NJ USA
Palm Beach and Palm Beach Gardens, FL USA
hanksiegel@hamiltonjewelers.com Création Hamilton Co. - Hank B. Siegeli - bague andesine du CongoCréation Hamilton Co. - Hank B. Siegeli - pendentif du Congo Création Hamilton Co. - Hank B. Siegeli - bague andesine du Congo















-  Jeffrey Appling, designer from USA - California:

Création Jeffery - bague andésine du Congo This expressive ring is titled "Ring That Rock".
The trillion red stone used for that ring is one of our Congo Andesine.

-  His website->








-  Patrick Lionnet from Paris, andesine and blue diamonds.

Création Patrick Lionnet - bague andésine du Congo








-  Remy, a French Jeweller (Besançon)
-  His website->

Création Remy - bague andésine du Congo Création Remy - bague andésine du Congo








-  Laurent Sikirdji Création Sikirdji - bague andésines du Congo

Boucles d’oreilles or -andésine du Congo - diamants. Création Laurent Sikirdji . Cliquez pour agrandir.
Création Sikirdji - pendentif andésines du Congo



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2009-10-13th : Our trip in Viet Nam and Thailand:

Only in French :

Départ pour le Viet Nam et la Thaïlande.

Au programme du Viet Nam: prise de contact avec le pays (une première), Hanoi, mines de Luc Yen, rencontres avec des universitaires, des mineurs, des négociants en gemmes, en 5 jours.

Au programme de Bangkok: 3 jours pour faire la tournée de nos fournisseurs et trouver des nouveautés pour vous ravir.
Bangkok est ma destination la plus fréquente: 2 voyages par an depuis 20 ans.


14-10-2009

Long voyage pendant lequel il faut oublier l’heure en France. C’est la meileure façon pour gérer le décallage horaire.
A l’escale de Bangkok je suis rejoint par deux amis francais qui se joignent à cette excursion vietnamienne.
Nous sommes attendus à l’arrivée par le Directeur du laboratoire de gemmologie de Hanoi.
Prise le contact avec le pays: la pluie, une grosse circulation bruyante et anarchique, la foule, les petites boutiques, les portraits d’Ho Chi Minh, des sourires...
La gemmologie commencera demain...

Hanoi




15-10-2009
Aujourd’hui, toujours la pluie, à la traîne du dernier typhon.
Rencontre avec le directeur de la société DOJI qui à invité le Dr. Laurent MASSI, Directeur du laboratoire AIGS de Bangkok, pour une conférence sur les derniers traitements concernant les corindons et plus particulièrement les rubis.
Pour résumer cette conférence; le récent traitement au plomb des rubis a été "amelioré". Il devient ainsi plus difficilement identifiable par un joaillier ou par un gemmologue, sans équipement de laboratoire. Seuls quelques laboratoires ont le matériel nécessaire pour pouvoir identifier ces traitements.
Un contre-rendu de cette présentation sera prochainement faite sur Gemfrance... patience!

J’ai eu l’occasion de voir quelques belles pierres. Mais comme souvent le meilleur et le pire se côtoient. Comme cette pierre rouge présentée sous blister comme une pierre naturelle, avec certificat, avec la mention "Rubis". La mention "rubis naturel" est correcte. Mais le traitement par remplissage de fractures avec un verre au plomb, n’est pas mentionné...



Star ruby 19Kg Un saphir de 15 tonnes



Cette journée fut aussi l’occasion de voir quelques pièces remarquables de la société DOJI, dont un saphir brut de 15 tonnes, en plein air à l’extérieur du bâtiment et un rubis étoilé brut de près de 19 kg. Saphir de 15 tonnes



Nous pouvons voir aussi quelques pièces minéralogiques comme ce marbre avec des cristaux de spinelles rouges de Luc Yen. Spinelles rouges sur marbre Spinelles rouges sur marbre







Une découverte satsfaisant tout gemmologue: des champignons étoilés à 6 branches!






16-10-2009

Visite des laboratoires de l’Université.
L’Univesité de Hanoi dispose de deux laboratoires: le "Laboratory of applied spectoscopy and gemology" et "Institute of material sciences".
Ces unités de recheche sont dans des locaux certes désuets et au confort sommaire mais pourvus d’un materiel important, dont spectroscopie optique, spectroscopie d’absorption a haute resolution, Raman, microscopie électronique à balayage, etc...

Visite d’un atelier de taille et de bijouterie de la société Doji.

50 kg de rubis


Dans cet atelier on peut voir toutes les étapes de la création du bijou, de la taille des pierres au serti sur les pièces de bijouterie.

La plaque à l’entrée de la société est constituée d’un fond de 50 kg de rubis bruts.

La taille des pierres
Atelier de taille et bijouterie



Le sertis

Jésus en Boudha

17-10-2009

Départ pour le Nord, objectif la zone minière de Luc Yen.

Il faut tout d’abord quitter Hanoi et ses milliers de cyclomoteurs. Les kilomètres défilent mais la ville semble s’éterniser. 170 km en 4 heures avant d’atteindre "le kilomètre 0".
Puis nous prenons la direction de Luc Yen. Encore 80 km mais les paysages comblent nos attentes. Les rizières, les collines aux plantations de thé, les buffles... une vrai carte postale.
Nous visitons une première zone qui est en cours de développement. Tout ce secteur semble riche en spinelles et rubis, mais de très petites dimensions.

Récolte de rubis et spinelles - Luc Yen - Viet Nam
Rubis étoilés - Luc Yen - Viet Nam
Rubis étoilés à l’heure du thé







Les gemmes de cette région sont d’origine métamorphique. On observe de beaux gneiss au bord des ruisseaux. Gneiss - Luc yen - Viet Nam

De beaux rubis étoilés ont été exploités. Ils sont opaques mais avec de belles teintes rouges avec une pointe de rose ou de mauve et une étoile à 6 branches très fines.
Les spinelles y sont rouges, orangés, bleus. Mais nous n’avons pas vu de pierres importantes. Les spinelles bleus sont très clairs. Nous n’avons vu que des petites pierres;

Ferme Luc yen

Un beau cristal de spinelle
Rizière - Luc yen - Viet Nam








Cette excursion montre à quelle point les pierres d’une certaine importance sont rares, particulièrement en spinelles bleus. L’essentiel des spinelles et rubis de cette région seront taillées en petites pierres calibrées pour du pavage.
Par contre les bruts de rubis étoilés permettent de tailler des cabochons de grosses dimensions. Vous pourrez les découvrir bientôt sur Gemfrance.

Nous croisons des paysans qui nous adressent toujours un signe et nous offrent de grands sourires.

Zone minère de Luc Yen - Viet Nam Zone minère de Luc Yen - Viet Nam


Sourire vietnamien

Luc Yen Viet-Nam
Rizière - Luc yen - Viet Nam




Luc Yen - Viet Nam




18-10-2009

Luc Yen a son marché aux pierres tous les matins.
Pendant seulement 2 heures des pierres brutes, gemmes et cristaux, ainsi que quelques pierres taillées sont présentés sur de petites tables en bois.
Aucune pierre d’importance n’est disponible, en dehors des rubis étoilés
Chaque achat nécessite une intense négociation.

Tableau en gemmes
Tableau en gemmes
Tableaux en pierres gemmes - Luc Yen - Viet Nam



Le gardien du marché de Luc Yen





Marché aux gemmes de Luc Yen
Marché conclu!

La visite des autres boutiques de Luc Yen permet de compléter les achats, particulièrement en rubis étoilés.

Ici se développe une activité de créations de tableaux faits entièrement avec des pierres gemmes brutes ou avec des gemmes pilés. Tri des gemmes - Luc Yen



Les gemmes sont triés suivant leur pureté. Les plus purs sont destinés à être taillés, les autres pourront être utilisés pour ces tableaux. Soit ils sont pilés, soit utilisés bruts.

Nous quittons la ville de Luc Yen pour une autre zone à une quinzaine de km. Mais cette fois l’accès est plus difficile du fait des récentes pluies. Quelques passages sont surmontés avec crainte par notre chauffeur qui est plus habitué aux embouteillages d’Hanoi qu’aux difficultés de cette piste.

La piste devenant trop difficile pour notre chauffeur, nous devons faire du stop pour être pris par des motos. Ci contre Perig Ruffault, compagnon de ce voyage. Piste vers Luc yen Perig Ruffault sur la piste de Luc Yen - Viet Nam.

Sur cette piste, dans un village, nous pouvons de nouveau sélectionner des gemmes; mais toujours que des petites pierres.

Zone minère de Luc Yen - Viet Nam


Dans cette région, l’activité minière est souvent "artisanale".

Nous rentrons à Hanoi après ce premier contact avec la région de Luc Yen , à "la poursuite des spinelles bleues". (250 km en 6h30...)


19-10-2009 HanoiHanoi - Viet Nam
Dernière journée à Hanoi après ce court séjour. Le bilan est positif et prometteur pour l’avenir. Sans nos contacts cette excursion aurait été impossible en si peu de jours.

Le voyage continue vers Bangkok.


20-10-2009

Bangkok.

Trois jours consacrés à la tournée de nos fournisseurs.
Les belles pierres sont rares mais vous pourrez bientôt profiter de nos trouvailles.
-  20 ans de voyages en Thailande permettent d’aller à l’essentiel très rapidement. Les prix des gemmes sont actuellement très fermes mais nous profitons d’un taux de change très favorable. Partout dans le monde les gemmes se négocient en dollar.


21-10-2009

Dernière ligne droite.

Nous vous rapportons de ce voyage:

Du Viet Nam:
-  des spinelles roses, rouge et un orange;
-  un seul spinelle bleu, de forme poire, retaillé à la perfection à Bangkok. Cette pierre est vraiment rare dans cette teinte;
-  des rubis étoilés;
-  des cristaux de spinelles et rubis.

A Bangkok je vous ai sélectionné
-  des Tourmalines;
-  des péridots du Pakistan;
-  des spinelles roses de Tanzanie;
-  de la Sodalite du Pakistan;
-  des grenats verts démantoides calibrés (ronds 4 et 4.5mm) de Namibie;
-  de l’Hackmanite du Myanmar;
-  de la Sillimanite jaune d’Inde;
-  de la Thulite de Norvège;
-  et diverses autres pierres de collection (Phenakite, Pollucite, Hambergite, etc...).

Et jour de chance, j’ai trouvé de très belles sapphirines de Kolonne au Sri Lanka.

Avis aux collectionneurs. je vous ai trouvé une pierre rare: une BERYLLONITE incolore de 2.95ct de forme coussin.
Exceptionnel!
Si vous êtes interessé(e), si vous voulez plus d’information, nous contacter. Une seule pierre... pour le premier à la demander...

La chasse aux gemmes a été excellente! Que du beau!

Demain départ de Bangkok avec ses nouveaux taxis "rose Barbie" juqu’au pommeau du levier de vitesse.

22-10-2009

Aéroport de Bangkok

Fin de ce voyage. Je quitte la Thailande par l’aéroport de Bangkok qui est l’un des plus beau au Monde.

Dr Laurent SIKIRDJI

PS : pendant ce voyage le service des commandes est bien entendu asssuré. Vous serez livré très rapidement... comme d’habitude.

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For each birth month, there is associated a birthstone:

-  January : Garnet;
-  February : Amethyst;
-  March : Aquamarine;
-  April : Diamond;
-  May : Emerald;
-  June : Pearl and Moonstone;
-  July : Ruby;
-  August : Peridot;
-  September : Sapphire;
-  October : Opal;
-  November : Topaz;
-  December : Turquoise.

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A ring with an Andesine by Jeffrey Appling.

It is a pleasure to show you this ring created by Jeffrey Appling, designer from USA - California.

This expressive jewellry is titled "Ring That Rock".
The trillion red stone used for that ring is one of our Congo Andesine.

Visit his website->

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15-nov. 2007 : New price record for a red diamond.

-  During the last Christie’s auction in Geneva, a red purplish diamond has been sold for $2,600,000, so $1,150,000 per carat.
The buyer is the jeweller from London Laurence Graff.
The previous record was $1,150,000 per carat in 1987, but for a 0.95ct red diamond.

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ANDESINE : A huge discovery in Congo in 2002!
アンデシン

This new gem was said discovered in 2002 in the Democratic Republic of Congo and as of the initial discovery of these stones, no more Andesine has been offered for sale from the RDC. The location was said from an area at southwest of the Nyaragongo volcano.

It is not really a "new gem", but it was the first time that andesine was discovered in gem quality with so large sizes and red colour.

Andesine is an intermediate member of the plagioclase series, close to Labradorite. The name depends on the ratio of Sodium and Calcium between Albite (Na(AlSi3O8) and Anorthite (Ca(Al2Si3O8). The stones examined by different laboratories have shown less than 50% of Calcium, thereby entitling them to be called Andesine (AGTA-USA / Nantes University - France / CCIP - France / JGGL - Japan / AIGS - Thailand). Based uniquely on the refractive index, certain of these stones could be classified as “Labradorite close to the boundary of Andesine/Labradorite” / Swiss Gemmological Institute (SSEF). But the chemical analysis confirms that these stones are entitled to be called Andesine. Several samples have been sent to laboratories. They have never found any evidence of enhancement. Our 200 largest stones underwent chemical analysis by the AIGS laboratory. All of these stones were confirmed to be Andesine.

Our 200 largest stones underwent chemical analysis by the AIGS. All of these stones were confirmed to be Andesine.

The red colour of these andesines is due to copper. Their clarity is exceptional. Red feldspar gemstones are extremely rare. The most well known was the Labradorite from Oregon, also called “Oregon Sunstone”, but these are never found in sizes as large with colours as red as this new discovery. The Congo Andesine contains more copper than the Oregon Sunstone.

The largest Congo Andesine known to date weights 33.42ct (in our inventory). See the picture below.

Since 2002 we have purchased only 2,941 pieces for 4651ct.

Only a few hundred flawless "top red" stones were cut, and we certainly have the largest inventory of the world stock of this Andesine. We have also other andesines which have an orange-red or orange colour in a lower price range. You may find other Andesines in the market with an orange colour and/or visible inclusions in an even lower price range, however we do not have stones in that lower quality.

A few rare specimens from the same source are yellow or green and a few have an “alexandrite effect” colour change (green / red, yellow/red).

At the 2006 Tucson gemshow, we saw more Andesine, this time coming from a Chinese location. However, we can confirm that these new andesines, even in the dark red color, are not of the same high quality.
The "Chinese Andesine" (also called "Tibet Sunstone" or "Tibet Andesine") on the market is not as pure and the red stones appear to have a brownish tone that is not present in the Congo Andesine. We also noted that the "Chinese Andesine" has a "sleepy" appearance compared to the stones from our inventory.
It is what we have seen, but, of course, some andesine for these chinease locations could be also in high quality.

Like Tanzanite, Andesine has a hardness of 6.5 (Mohs scale), and is therefore suitable for jewelry. Unlike Tanzanite, these stones are not heated or enhanced in any way, the bright beautiful red colour is as it came from the earth and not induced by heat treatment, as is almost always the case with Tanzanite. In addition, Andesine is considerably rarer than Tanzanite ; compare the few hundred stones of Andesine found to date to the tens of thousands of Tanzanites. Yet, our price per carat for top quality Andesine is about the same price as top quality Tanzanite.

If you are looking for a shape or size that isn’t yet on the website, please contact us. We would also be pleased to have your stone set into gold or platinum jewelry, ask us for a quote!

Hardness : 6.5. IR : 1.551 / 1.560. Specific weight: 2.67

Pictures : copyright © J.SCOVIL 2004

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BLUE CHART: We have selected this chart, in english. It is very useful to determinate gemstones. Easy to use.

You can order directly ORDER on GEMFRANCE. 24€.

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