A platinum sapphire & diamond ring; central dark blue sapphire…
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A platinum sapphire & diamond ring; central dark blue sapphire of approx. 1.7ct to border and shoulders set with 30 round brilliant cut diamonds totalling approx. 0.84ct. Wt. 6.3g. Size J.
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.
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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