Iceland Spar-Optical Calcite Rhomboid Cube Brazil amethyst This captivating purple and green

This captivating purple and green specimen does not exhibit a full face flash

BeautIful Chevron Amethyst Tower

and balance

Cool Forms

Iceland Spar-Optical Calcite Rhomboid Cube Brazil amethyst This captivating purple and greenBeautiful Rainbow filled Iceland Spar Optical Calcite Rhomboid Cube This beautiful large high grade Iceland spar cube is a great example of optical clarity, allowing for a stunning display of gorgeous internal rainbows as light plays within its perfectly formed structure. Its beautiful transparency highlights the captivating double refraction effect, a hallmark of this unique calcite variety. Quite rare to get this size intact Weighs 908g and is 13cm