9ct Gold and Onyx Enhancer - 13.8g - Necklace/Chain

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onyx and 9ct yellow gold enhancer, marked 9ct. Approx weight 13.8 grams

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Onyx - Onyx is a form of agate, used from antiquity and popular again in the 1920s and 30s. European onyx is generally green, but can be many other colours, and can contain bands of black and/or white.

This multicoloured stone is widely used for table tops, lamp bases and in jewellery. Some types of onyx are also used for cameos of which the upper white layer is cut away to reveal the colour beneath.

This item has been included into following indexes:

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A 15ct gold stone set signet ring, featuring an oval cut blood stone, hallmarked Birmingham 1876 (reproduction), size Q, wt. 5g.

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Patek Philippe gentleman's signet ring 18ct yellow gold stone set, stamped 'Patek Philippe Geneve 750'

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A 9ct yellow gold sapphire & diamond ring, one oval sapphire, 1.00ct with four round diamonds, 0.12ct mounted in a yellow gold ring, size o

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