Iceland Spar-Optical Calcite Rhomboid Cube amethyst matte finish

matte finish

often formed through volcanic activity

reddish-orange gemstone that has been treasured for centuries for its bold colour and energising properties

Full of shimmering sparkle and delicate white "snowflake" inclusions throughout

Iceland Spar-Optical Calcite Rhomboid Cube amethyst matte finishBeautiful 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