Aquamarine, Sapphire, and Diamond Earrings with Flower Motif Surmounts

Pair of 18ct white gold, aquamarine, sapphire and diamond…
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Pair of 18ct white gold, aquamarine, sapphire and diamond earrings, the faceted aquamarine pendant drops together weighing 50.84 carats are suspended below sapphire and diamond set flower head motif surmounts, the diamonds together weighing approximately 2.65 carats, length approximately 67 mm, folding post and clip fittings., accompanied by a Grs report numbered GRS2010-101528, dated 12 October 2010, stating that the 25.73 carat and 25.11 carat natural aquamarine are pastel greenish-blue with no indication of thermal treatment. Provenance: Important jewels, Sotheby's Australia, 27 June 2011, lot 128, illustrated. Private collection, Sydney, acquired from the above

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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.

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