18ct Gold Prehnite and Onyx Diamond Earrings, 64mm Length
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Pair of 18ct gold, Prehnite, onyx and diamond earrings; each earring comprising a rectangular panel of pierced green onyx, suspended below a solitaire diamond and cabochon prehnite surmount, the diamonds together weighing approximately 0.15 carats, the prehnite together weighing approximately 11.19 carats, to post and butterfly fittings, length approximately 64 mm.
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- Cabochon Cut in Jewellery - A cabochon cut is a type of gemstone cutting where the stone is cut and polished in a convex shape with a flat bottom and a domed top, with no facets. This type of cut is typically used for opaque or translucent stones that have natural patterns or inclusions that are best displayed in this type of cut. Examples of stones that are often cut as cabochons include turquoise, opal, and moonstone.
- 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.
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