607g Optical Calcite Freeform TC1977 black phantom lemurian This Vivianite specimen has deep

This Vivianite specimen has deep color and translucency which allows the light to penetrate the crystals for a wonderful effect

transforming into a stunning and colorful gemstone known as ammolite

A gorgeous clear quartz tower with great clarity

Canada but has also been found in Finland and commonly now comes from Madagascar

607g Optical Calcite Freeform TC1977 black phantom lemurian This Vivianite specimen has deep607g Optical Calcite Freeform Approx. Dimensions: 3x2. 5x2. 75 inches Approx. Weight: 607 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