86g Optical Calcite Freeform TC2101 sphalerite Weight: 94 grams

Weight: 94 grams

Weight: 826

Dimensions: 4x1x0

This is a completely natural quartz cluster from Diamantina that exhibits great clarity and luster typical of quartz from this locality

formed by the impact of a meteorite or comet in southern Germany about 15 million years ago

86g Optical Calcite Freeform TC2101 sphalerite Weight: 94 grams86g Optical Calcite Freeform Approx. Dimensions: 1. 25x1x2 inches Approx. Weight: 86 grams Locality: Maharashtra, India Optical calcite is also referred to as Iceland Spar because of its first discovery in Eskifjord, Iceland. It is typically colorless, and exhibits the optical phenomenon of double refraction where an object viewed through the calcite will appear doubled. Double refraction, or birefraction, is also called birefringence and is also