Unique type of Beryl var. Alkali-Beryl specimen from Deo Darrah, Badakhshan, Afghanistan. It displays well formed tabular hexagonal crystal with gemmy areas. It is light blue at the rims to dark blue at the center. It is strongly lustrous. For references see the 2018 issue of The Mineralogical Record vol. 49, # 4. In superb condition. On acrylic base.

Fabulous!