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Ships within 48 hours · Estimated delivery Sep 28 - Oct 3
Weight: 294 grams
as can be seen in the last photo under a long wave UV light
Mineral stand and putty not included
Raw opal set in sterling silver
895 gram Grape Agate Specimen
69g Optical Calcite Freeform TC2127 orange calcite Weight: 294 grams69g 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
