Amethyst Crystals
by Science Photo Library
Title
Amethyst Crystals
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Amethyst crystals, a variety of quartz, (silicon dioxide). The purple colour in amethysts is caused by the presence of compounds of iron or manganese. It is often used as a gemstone in jewellery, especially in rings. Although amethyst is found in Europe and North America, the finest specimens occur in India, Sri Lanka and Brazil.
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September 16th, 2018
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