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เพิ่มเติม เกี่ยวกับ taaffeite

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 Multicolour.com > Gem Library > Gemstones Varieties > Taaffeite
Aug 10, 2011 ... Taaffeite is one of the rarest and most desirable of collector's stones. Only a very few stones have been found, most of them originally ...

คำค้น: taaffeite
 Ten of the World's Rarest Gemstones (& How to Get a Few)
Far scarcer than diamond, here are painite, grandidierite, taaffeite and other exotica. The absolute rarest gemstones are a matter of dispute, but here are — at ...

คำค้น: taaffeite
 Featured Stone - Taaffeite
We make no secret of our love for gemstone rarities, so it seems appropriate that we would choose Taaffeite to be a profiled stone. Pronounced TARF-ite, the ...
http://www.thegemtrader.com/Featured Stone - Taaffeite.htm

คำค้น: taaffeite
 Taaffeite, Musgravite, Pehrmanite
Taaffeite, Musgravite, Pehrmanite. ... Formula Taaffeite (Magnesiotaaffeite 2N'2S) : Mg3Al8BeO16 ... Largest Taaffeite: 33.33 ct (1999 auction in Hong Kong) ...

คำค้น: taaffeite
 Taaffeite - The Gemology Project: A Gemologist & Gemstone Database
Jul 13, 2009 ... In mineralogy taaffeite is the name of a polytype group to which also musgravite belongs. The current (2002) IMA approved name for taaffeite ...

คำค้น: taaffeite