Very pretty purple Sugilite cabochon set in silver and
measuring 15mm x 13mm including the silver setting.
Textured Argentium silver band 9.5mm high
Size O - UK
71/4 - US
Assayed and hallmarked by the Goldsmiths' Co London
Note: Argentium®silver 935 is a modern sterling silver alloy, containing 93.5% silver. The traditional sterling alloy (92.5% silver & 7.5% copper) is modified by removing some of the copper and adding the metalloid germanium which results in making the silver more resistant to tarnish. All Argentium alloys are nickle-free.
Sugilite is a rare purple cyclosilicate mineral that was named after the Japanese petrologist, Ken-ichi Sugi, who first identified it in 1944 in Iwagi Islet, Japan. However, this occurred as brownish-yellow grains that were not suitable for use as gemstones. A significant deposit of gem-quality material was later discovered in 1979 at a manganese mine in the Southern Kalahari Desert of South Africa. In 1980 sugilite was officially classified as a rare gem, which caused its price to increase. Since then, additional deposits have been discovered, but since these are small, it remains a rare gem.
Sugilite gets its attractive purple colour from traces of manganese. It can range in colour from pinkish-purple to deep bluish-purple. The most highly valued sugilite gemstones are a uniform and intense purple. A great deal of sugilite has patches, veins or layers, and attractive or interesting patterns are also desirable in sugilite gemstones.
Shipping & delivery
This item will be posted to you by TheresaHingJewellery within 3 days of receiving payment.
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