Mineral: | Corundum, Variety Sapphire / Spinel
| Chemical Formula: | Al2O3 / MgAl2O4 | Size: | | Weight: | | Transparence: | translucent - subtranslucent | Quantity: | | Origin: | Mogok Stone Tract, Mandalay Division, Burma (Myanmar) | Here you get a big sapphire crystal covered by a several millimeter thick layer of spinel crystals. The spinel crystals are apart from two areas at the smaller sides, totally undamaged and revealing dozens of triangle faces in a white, slightly pinkish to purplish coloration. At the base you can see a kind the fibrous colorless to blackish changing sapphire crystal - a really big sized and unusual specimen from Burma.
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