Amethyst is the birthstone for those born in the month of February, and also is the 6th anniversary stone. Throughout history, Amethyst, along with rock crystal and other quartz stones, was believed to have supernatural powers. Amethyst was known to prevent drunkenness and protect the wearer from catching contagious diseases. Spheres of rock crystal were also believed to possess powers that could foretell the future.
This might have developed from the fact that quartz does posses properties that make it seem magical. Quartz crystals become electrically charged when subjected to pressure, and if an electrical current is run through a piece of quartz, the crystal will vibrate at a single, constant frequency, which in turn is determined by the strength of the current and the thickness of the crystal. For this reason, quartz crystals are commonly used to regulate watch movements and stabilize electronic frequencies in radios.
 592 Carat 8 8x5 Amethyst Pear Gem Stone Gemstone  US $13.99
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 Gem 645ct 16x12mm Oval Checkerboard Brazilian Amethyst US $39.00
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 472 Carat 13x10 Oval Amethyst Gem Stone Gemstone US $10.99
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 JTV Brazilian Amethyst 6mm Round Checkerboard Cut Parcel Jewelry Television US $17.98
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 117CT 15x15mm 100 Natural Amethyst Cab SAM198 US $9.00
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 9 Carat 14 x 14 mm FANCY PRINCESS CUT DELIGHTFUL GREEN COLOR AMETHYST GEMSTONE US $12.15
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 250ct NATURAL LIGHT GREEN AMETHYST FACET ROUGH YGA99 US $9.00
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 575 Carat Pair Marquise Amethyst Gem Gemstone Gem US $22.99
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 NATURAL 487CT GREEN AMETHYSTCUSHION CUT 9MM X 9MM US $149.99
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 8mm round Africian Amethyst 168ct Feburary Birthstone Jewelry making Collection US $9.99
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