TIM2 Beryl var. Aquamarine
Huanggang Mine, Hexigten Banner (Keshiketeng Co.), Ulanhad League (Chifeng Prefecture), Inner Mongolia Autonomous Region, China
One of the surprises at Huanggang was the presence of aquamarine crystals. Although the mine cluster is exploiting a skarn, there is a pegmatite intrusion present. It is from that pegmatite that these aquamarines have been coming.
This is the largest single crystal of aquamarine that I have seen from the location. About a year and a half ago there were a few clusters available, but no more were found. Along with those clusters, I would consider this to be one of the more notable aquamarine examples from the location, typically the crystals stayed under 5 cm, with 6.5 cm being considered very large.
The termination is deep blue, the rest (as with all of these) has a whitish rind-- probably due to etching that is causing the light to diffuse