Onyx and Diamond Marquise Cluster Ring

A stylish onyx and black and white diamond cluster ring, 18ct…
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A stylish onyx and black and white diamond cluster ring, 18ct white gold, made as a modern marquise shaped cluster dress ring, centrally set with a peaked polished piece of black onyx, measuring 17.5 x 11 mm, claw set to each end, framed by a spaced claw set frame of eight brilliant cut white diamonds totalling 0.40ct and twenty smaller black brilliant cuts, totalling approximately 0.40ct, pierced to gallery, finished on a smooth tapering band.

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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.
  • Brilliant Cut - In their naturally occuring state diamonds have little life or sparkle and for many centuries were simply cut in half and worn in amulets. Invented at the end of the 17th century by a Venetian diamond cutter, a "brilliant cut" diamond has 58 facets arranged in a regular geometric relationship, with 33 above the crown and 25 below on the pavilion.

    The introduction of the brilliant cut increased the popularity of diamonds in jewellery as it was the first cut to reveal the fire of the diamond, with the light being internally reflected from one facet to another, and was superior to the previously used table cut and rose cut.Variants to the brilliant cut have emerged since the end of the 17th century, but the popularity of the original brilliant cut has continued to the present time, where it is still the most commonly found cut.

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