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.
If there is any other question referring to
tungsten crucible for sapphire growth furnace, please feel free to contact us
through the following methods.
Email: sales@chinatungsten.com
Tel.: +86 592 512 9696/ +86 5925129595
