Malaya Garnet:
The commercial name for a pyrope-spessartite garnet coming from Tanzania.
Etymology: Malaya = « prostitute » in ki-swahili.
_When these stones were first discovered, no one really knew how to classify them. They were not much in demand and these gems were considered « outcasts » by the miners.
March - Louise Michel
It is the name given to the meteorite NWA 1068 (Shergottite.)
The name have been given in memory to the French anarchist 1830-1905.
Magnesite: 菱苦土石
Discovered in 1808.
Magnesite
Etymology: from Geek "Magnes" = stone from Magnesia, in Greace where this mieneral have feen first found.
See the gallery.
Magnetite Fe+2 Fe2 +3 O4 磁鉄鉱
Magnetite ©gemfrance.com
Magnetite ©gemfrance.com
Iron oxyde from the spinel family.
Magnetite is a natural magnet, hence the name, giving it a very nice distinguishing characteristic.
Etymology: from the name of Magnes in Greek.
Typical locality: Magnesia, Thessalie, Greace.
See the gallery->
Manganotantalite
Mangano tantalite ©gemfrance.com
Mangano tantalite ©gemfrance.com
Rare mineral from the Tantalite group.
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Metamization
It is a natural process resulting in the gradual and ultimately complete destruction of a mineral’s crystal structure, leaving the mineral amorphous. Affected material is therefore described as metamict.
Meteorite: 隕石
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Moldavite:
Moldavite is a naturally occurring glass, originally found along the Moldau River in Czechoslovakia in 1787. It is usually a dark olive green color.
See the gallery of the rough moldavites->
See the gallery of the faceted moldavites->
Montebrasite: LiAl(PO4)(OH,F)
Etymology: from the name of the locality "Montebras", Soumans, Creuse, France.
Belong to the Amblygonite group and the Phosphate class.
Moonstone: 月長石
Commercial name given to a feldspar.
The moonstone is characterised by an enchanting play of light. Indeed it owes its name to that mysterious shimmer which always looks different when the stone is moved and is known in the trade as ’adularescence’. In earlier times, people believed they could recognise in it the crescent and waning phases of the moon. You can read more on ICA website.
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Morganite: Al2Be3(Si6O18).
Etymology: Named after John Pierpont Morgan.
The Morganite is a pink beryl.
The pink color could be enhanced by heating.
M’torolite:
It is a green chalcedony coming from Zimbabwe, Namibia.
The green color of the M’torolite is coming from Chromium.
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