Canturi Cubism Ring with 4.58ct Emerald-Cut Diamond

Diamond and gem-set 'Cubism' ring, Canturi the emerald-cut…
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Diamond and gem-set 'Cubism' ring, Canturi the emerald-cut diamond weighing 4.58 carats is claw-set and framed by shoulders each similarly set with a baguette emerald, ruby and sapphire, the bridge accented to each side with a baguette diamond and the band partially grain-set with brilliant-cut diamonds, the smaller diamonds, sapphires, rubies and emeralds together weighing 0.47, 0.49, 0.20 and 0.16 carat respectively, mounted in 18ct white gold, size J, signed Canturi, numbered 3714310. Accompanied by: A GIA report numbered 2145089627 dated 16 November 2011, stating that the 4.58 carat diamond is H colour, VS2 clarity;. A facsimile Canturi appraisal numbered MV3714310, dated 2 June 2022, and a Canturi box .

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  • Carat - A carat (abbreviated "ct") is a unit of measurement used to describe the weight of a diamond or other gemstone, and separately is a unit of measurement used to describe the weight of precious metals such as gold,.

    For gemstones, one carat is equal to 0.2 grams or 200 milligrams. The weight of a diamond is one of the Four Cs (along with cut, colour, and clarity) that are used to determine a diamond's value.

    It is important to note that a diamond's weight does not necessarily correspond to its size. A diamond's cut, which affects how well it reflects light, can make a diamond of a lower weight appear larger than a diamond of a higher weight. Additionally, the carat is not the only factor to determine the value of a diamond, other factors such as clarity, colour and cut are important too.

    In the gold industry, the purity of gold is measured in carats (abbreviated "ct"), with 24 karats being pure gold and lower carat numbers indicating a lower purity level. So, for example, 18 carat gold is 18/24 or 75% pure gold, and 12 carat gold is 12/24 or 50% pure gold.
  • Claw Set Jewellery - The description "claw set" in jewellery refers to a setting where the gemstone is held in place by metal prongs that resemble claws. These prongs are bent over the edges of the gemstone to secure it in the setting. This type of setting is commonly used for diamonds and other precious stones.

  • 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.

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