Canturi Metropolis Black Sapphire Diamond Ring

A black sapphire and diamond ring by Canturi, from the…
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A black sapphire and diamond ring by Canturi, from the 'Metropolis collection', featuring an emerald cut black sapphire of 6.40cts, set to the centre with a rose cut diamond, and having further diamonds set to the shoulders, mounted in 18ct white gold, ring size K-L

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  • Emeralds - Emeralds have been used in jewellery making for thousands of years, and are prized for their deep green colour, which is caused by the presence of chromium and vanadium in the mineral beryl. Because of their rare colour, emeralds are often more valuable than diamonds of a similar size and quality. In jewellery making, emeralds are typically cut into round or oval shapes to maximize their color and clarity. They are often set in gold or platinum and used as the centrepiece of a piece of jewellery, such as a ring or necklace. They can also be used in combination with other gems, such as diamonds, to create intricate and beautiful designs.
  • Rose Cut - A flat based cut for a preious stone, leaving the surface covered with triangular facets, usually 24 in total.

    It was introduced in the 15th century and popular during the 16th and 17th centuries.

    The rose cut was the most popular form of diamond cut until the discovery of the brilliant cut at the end of the 17th century, after which its use declined.

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