Petra LLC.
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Topaz, Amethyst
Brand:
Petra
Colour:
Blue, Swiss, London
Description
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Description
Since 2009 one of the top priority development directions is refinement of natural amethyst and topaz crystals. This includes our technology of irradiation topaz coloring allowing to get Swiss Blue crystals from colorless topaz. By using the same technology on a natural amethyst we managed to intensify its color from light tinted crystal to the medium intensity colors.
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Supplier info last updated: 1 Jan 2017
Advertise since: 1 Dec 2011
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