- Blue Alkali Beryl
- Thumbnail, 2.8 x 1.6 x 1.2 cm
- Deo Darrah, Khash & Kuran Wa Munjan Districts, Badakhshan Province, Afghanistan
An exceptional specimen with rich color and a thick crystal. Perched on a thin crust of matrix is a lovely, tabular, lustrous and translucent, sky blue alkali-rich beryl crystal, measuring 2.2 cm across. These were originally thought to be Rosterite or Vorobyevite, but further analysis by Dr. Federico Pezzotta confirmed they are alkali-rich beryls.