Description
*All of our Minerals & Crystals are 100% Genuine Specimens & come with a Certificate of Authenticity*
Specimen: Iceland Spar Calcite, double refraction
Type: Mineral/Crystal
Location: China
Scale cube=1cm: Full sizing please see photo
Calcite has many different attributes for the mind and the body. Mentally, it is a stone that helps the wearer in everyday life, increasing awareness, empathy, compassion, inner strength, and motivation. It also helps promote a positive moral structure and outlook, and overall spiritual growth.
Iceland spar, formerly known as Iceland crystal, is a transparent variety of calcite, or crystallized calcium carbonate, originally brought from Iceland, and used in demonstrating the polarization of light. It occurs in large readily cleavable crystals, easily divisible into rhombs, and is remarkable for its birefringence. This means that the index of refraction of the crystal is different for light of different polarization. A ray of unpolarized light passing through the crystal divides into two rays of perpendicular polarization directed at different angles, called double refraction. So objects seen through the crystal appear doubled. Famously discovered in Iceland, hence its name, Iceland Spar can also be found in USA, Mexico and China.
Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate. Calcite is a common constituent of sedimentary rocks, limestone in particular, much of which is formed from the shells of dead marine organisms. Approximately 10% of sedimentary rock is limestone.
**The mineral is a carefully chosen piece, with a photo that shows the actual specimen you will receive.**
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