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Active mainly during the mid-20th century
which is the phenomenon that produces the ethereal play-of-color when light interacts with the microscopic layers of feldspar within the stone
Gwindels from the Alps of France are among the best in the world
Dimensions (crystal only): 4 x 2 x 5 inches
Opal Ring Size 5
2" Growth Interference Quartz from Bor Mine DX1123 smoky quartz Active mainly during the mid-20th2" Growth Interference Quartz from Bor Mine Approx. Dimensions: 2x1. 25x1 inches Approx. Weight: 33. 4 grams Locality: Bor Mine, Dalnegorsk, Primorskiy Kray, Russia This growth interference quartz from the Bor Mine, Dalnegorsk, Russia showcases unusual and highly aesthetic crystal forms created when quartz growth is disrupted by neighboring crystals or changing conditions in the pocket. The result is complex surface patterns, stepped growth features,
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