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Что такое термообработанный или «гретый» сапфир?
Heat treated sapphire is a natural sapphire that has undergone some type of heating process in order to alter or improve its appearance.
Natural sapphires are usually heat treated to improve color and clarity. As a result of the dissolution of mineral inclusions and the chemical reactions occurring in the mineral, the blue color of the stone intensifies or undesirable shades disappear, and also it improves the clarity of the stone. This type of treatment is worldwide accepted and is acceptable for stones that do not belong to the highest quality categories.
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