- Blue Alkali Beryl
- Thumbnail, 2.3 x 2.0 x 1.2 cm
- Deo Darrah, Khash & Kuran Wa Munjan Districts, Badakhshan Province, Afghanistan
Perched on a bit of matrix are tabular, parallel growth, lustrous and translucent rich blue alkali-rich beryl crystals, to 1.5 cm across. Slightly contacted on the right side, but displayable from the front. These were originally thought to be Rosterite or Vorobyevite, but further analysis by Dr. Federico Pezzotta confirmed they are alkali-rich beryls.