2018年1月31日星期三

Sapphire Deposits of Kashmir

The sapphire deposits of Kashmir are well known in the gem industry,[38] despite the fact their peak production took place in a relatively short period at the end of the nineteenth and early twentieth centuries. They have a superior cornflower blue hue to them with a mysterious and almost sleepy quality, described by some gem enthusiasts as ‘blue velvet”. Kashmir-origin contributes meaningfully to the value of a sapphire, and most corundum of Kashmir origin can be readily identified by its characteristic silky appearance and exceptional hue. The unique blue appears lustrous under any kind of light, unlike non-Kashmir sapphires which may appear purplish or grayish in comparison. Sotheby's has been in the forefront overseeing record-breaking sales of Kashmir sapphires worldwide. In October 2014, Sotheby’s Hong Kong achieved consecutive per-carat price records for Kashmir sapphires - first with the 12.00 carat Cartier sapphire ring at US$193,975 per carat, then with a 17.16 carat sapphire at US$236,404, and again in June 2015 when the per-carat auction record was set at US$240,205. At present, the world record price-per-carat for sapphire at auction is held by a sapphire from Kashmir in a ring, which sold in October 2015 for approximately US$242,000 per carat (HK$52,280,000 in total, including buyer's premium, or more than US$6.74 million)


The big deposit has increased the use of sapphire in many industries, such as cell phone screen, television screen, windows, etc. tungsten crucible is a main body to grow sapphire.

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Email: sales@chinatungsten.com
Tel.: +86 592 512 9696/ +86 5925129595

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