Mineral: | Tourmaline , Variety: Elbaite
| Chemical Formula: | Na(Li1,5AL1,5)Al6(BO3)3[Si6O18](OH)3(OH) | Size: | | Weight: | | Transparence: | transparent - translucent | Quantity: | | Origin: | Pyan Gyi mine (West of Pyan Pyit), northeast of Mogok, Burma (Myanmar) | A very rare prismatic Tourmaline crystal from a metamorphic limestone are, where normally only spinel and short prismatic or twinned uvite (rose-tourmaline) crystals are found. The specimen shows a light color change! This must be caused by a light vanadium and chromium content. Chemically the crystal might be an uvite not an elbaite. In either way this is a very rare and fully intact crystal !
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