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Neptune Topaz 0,7 ct
Item Number: 4033FM
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Details
Gemstones
Name Neptune Topaz 0,7 ct Brand Collectors Edition Quantity Gemstones 1 Carat Weight Sum 0,7 ct Alloy none Design other Colour blue First Gemstone
Gemstone Topaz Variety Neptune Topaz Cut Faceted Cut detailed Pear Cut Carat Weight 0,7 ct Size 7x5 mm Quantity 1 Origin Brazil -
Treatment and Care
Neptune Topaz
Treatment Heating, irradiation and PVD-coating (PVD process): US Patent Number 5,853,826 for Asotic Coating Technologies Inc) explanation Generally used to improve/strengthen the colour or to create unique colours. The physical coating with steam is an oxide treatment that uses optical interference to produce a variety of colours thanks to the application of a bonded layer of fine titanium atoms. Care Instructions Some stones fade or revert to their original colour when exposed to strong light; gemstones are not unnecessarily exposed to these conditions; coated or surface-treated gemstones cannot be resharpened and polished Steam Cleaning No Ultrasonic Cleaning No - Item categories