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Encyclopedia

A B C D E F G H I
J K L M N O P Q R S T U V W X Y Z

Jade: 翡翠
On this name there is two major families of gems : The Jade Nephrite (Amphibole family) and the Jade Jadeite (Pyroxene family).
Jadeite is the finest quality of Jade.
Etymology : the name "jade" is coming from the Spanish "Pietre de ijada" = "stone of colic, pain in the side" (jade was thought to cure this).

The Jade is used since the neolithic period. Artefacts in Jade have been founded in 5,000 years old China tombs .

In Central America, the old civilzations Olmeques, Mayas, Tolteques, Azteques have used Jade since 1,200 AM to the 13° century.

Traditionally, jade stone is the most revered gemstone in Asia and specifically in China. It is believed in the virtues of happiness, serenity, wisdom.

The Jade is well known in green color. But it exists also in yellow, brown, purple, white...

The emerald green jade called "Imperial Jade" is colored by chromium.

Jade location and deposits
-  Jadeite : The most important deposits are found in upper Myanmar (Burma). Other locations are in Canada, China, Guatemala, Japan, Kazakhstan, New Zealand and Russia.
-  Nephrite: Alaska, Australia, Brazil, Canada, China, Russia, Taiwan...

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Jeremejevite: Al6 B5 O15 (F,OH)3 エレミア石 Jermejevite Myanmar ©Gemfrance.com
Very rare gemstone.
Discovered by Damour in 1884.
Etymology : from the Russian mineralogist’s name, P.V. Jeremeiev (1830-1899).
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Johachidolite: Ca Al B3 O7

Johachidolite Myanmar ©Gemfrance.com
Johachidolite Myanmar ©Gemfrance.com
Johachidolite Myanmar ©Gemfrance.com

Discovered in 1942 by Iwase et Saito.
Etymology : from the localty of Johachido, Kisshu Co., Kenkyochokudo, North Korea.
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