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Round 5mm Sterling Silver and Manmade Blue Opal Earstud Earrings

Round 5mm Sterling Silver and Manmade Blue Opal Earstud Earrings

Round 5mm Sterling Silver and Manmade Blue Opal Earstud Earrings
Round 5mm Sterling Silver and Manmade Blue Opal Earstud Earrings
Round 5mm Sterling Silver and Manmade Blue Opal Earstud Earrings > Club Customer price per 1 Pair

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Priced per 1 Pair

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Item Number: 9001 00 02

Weight: 0.6g

As well as occurring naturally, opals of all varieties have been synthesised experimentally and commercially. The discovery of the ordered sphere structure of precious opal led to its synthesis by Pierre Gilson in 1974. The resulting material is distinguishable from natural opal by its regularity; under magnification, the patches of color are seen to be arranged in a "lizard skin" or "chicken wire" pattern. Furthermore, synthetic opals do not fluoresce under UV light, are generally lower in density and more porous than natural opal. This piece also contains Sterling Silver. Sterling silver (or STS) is an alloy of silver containing 92.5% by mass of silver and 7.5% by mass of other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925. Fine silver (99.9% pure) is generally too soft for producing functional objects; therefore, the silver is usually alloyed with copper to give it strength but preserving the ductility and beauty of the precious metal. Over the years, some countries developed systems of hallmarking silver. The purpose of hallmark application is used to indicate the purity of the silver alloy used in the manufacture or hand-crafting of the piece.

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