Sapphire, Diamond, and Onyx Rings in Various Metals and Sizes

Two sapphire and diamond rings and an onyx ring; one set with…
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Two sapphire and diamond rings and an onyx ring; one set with an approx. 1ct oval cut blue sapphire and two single cut diamonds in approx. 6ct white gold, size L, one in silver set with an approx. 0.70ct oval cut blue sapphire and 2 single cut diamonds, size M, other set with a cabochon onyx in a plated mount, size N1/2.

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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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