69g Optical Calcite Freeform TC2127 azurite Dimensions: 5x1

Dimensions: 5x1

so it is very close to being considered a floater

is a very vesicular volcanic (igneous) rock that is typically dark colored

Weight: 288 grams

terminated specimen

69g Optical Calcite Freeform TC2127 azurite Dimensions: 5x169g Optical Calcite Freeform Approx. Dimensions: 1x1x1. 5 inches Approx. Weight: 69 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