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5 Half round grooves
Ø90mm overall width
Our gold testing stone is an essential tool for jewellers and retailers who demand accurate results without risking damage to precious pieces
Bergeon 7971A
Ethiopia and Brazil
3.78ct Round Cabochon Opal 12mm Renata Essence 5 Half round groovesOpal is probably the most famous phenomenal stone displaying the unparalleled play of colour, a rainbow coloured kaleidoscopic effect. The name opal derives from the word 'opalus' given by the Romans, which is Latin for 'precious stone'. They can be fragile which makes it more suitable for jewellery such as necklaces, brooches and earrings that are less likely to be knocked. Opal is the birthstone for October. Mohs Scale of Hardness: 5. 5 6. 5
US$ 349.50
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US$ 70.00
US$ 140.00
