His color is of yellow - orange (honey) with brown-orange and brown-pink. By heating, the pink color is stressed.
It is the variety of the rarest topaz
.
To know more about the mineralogy of the topaz, see mindat.org ->
The Encylopedia of gems in English is still under construction. Thanks to visit the encyclopedia of gems in French.
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Topaz (imperial)
- Translations : Topaz, Topaas, Topaasi, Topacio, Topas, Topáz, Topazas,Topázio, Топаз, زبرجد, زبرجد هندی, トパーズ, 황옥, 黄玉, טופז
- Type localityBrésil
Gemological data
- Chemical formula : Al2 (F, Oh)2 (SiO4)
- Hardness (Mohs) : 8
- Density : 3.53
- Refractive index : 1.606 - 1.631
- Birefingence : 0.007 - 0.010
- Crystal system : Orthorombique
- Group : Nésosilicate
The gallery
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- TOPI0002
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- TOPI0003
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- TOPI4007
