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A unique specimen of Celestine from a great locality
Weight: 142 grams
The structures were empty tubes
Weight: 44 grams
357g Optical Calcite Freeform TC2009 ruby zoisite A unique specimen of Celestine357g Optical Calcite Freeform Approx. Dimensions: 2. 5x2x2. 5 inches Approx. Weight: 357 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
