Blue Alkali Beryl
Deo Darrah, Khash & Kuran Wa Munjan Districts, Badakhshan Province, Afghanistan
Thumbnail, 1.9 x 1.6 x 1.2 cm
This is a doubly terminated, tabular, lustrous and translucent, sky blue alkali-rich beryl crystal measuring 1.8 cm across and perched on a bit of matrix. These were originally thought to be Rosterite or Vorobyevite, but further analysis by Dr. Federico Pezzotta confirmed they are alkali-rich beryls.