Dioptase on Calcite Brookite Both twins are actually doubly

Both twins are actually doubly terminated

This mine at Oruro dates Spanish mining as far back as the year 1595 and was mined by Incan Indians for several centuries prior

The majority of the specimens were mined in the mid-1800s and

No damage anywhere

as half of the gem is off-white non-included Quartz

Dioptase on Calcite Brookite Both twins are actually doublyWhen it comes to Dioptase, there is no locality greater or more prolific than Tsumeb for quantity and quality. The finest Tsumeb Dioptase specimens are simply breathtaking, and now in very short supply on the market. This specimen exhibits the top emerald green color (impossible to replicate in photos) that made these specimens so famous. Sharp, very lustrous, well formed, trigonal crystals sit beautifully in a crystallized "ridge" on classic