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Black Phantom Lemurian
The willow branch
characterized by its coloration derived from traces of manganese
Weight: 134 grams
84g Optical Calcite Freeform TC2115 guerrero amethyst Black Phantom Lemurian84g Optical Calcite Freeform Approx. Dimensions: 1. 25x1. 25x1. 75 inches Approx. Weight: 84 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
