Sapphire and Diamond Cluster Brooch/ Pearl Clasp

Sapphire and diamond brooch/pearl clasp, of cluster design,…
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Sapphire and diamond brooch/pearl clasp, of cluster design, centring on a mixed cushion-cut blue sapphire weighing 13.80 carats above a border of ten old European-cut diamonds together weighing approximately 8.50 carats, mounted in silver and 18ct gold, brooch converts to a pearl clasp, diameter approximately 27 mm. Accompanied by a GSL report numbered AA51312, dated 8 March 2013, stating that the 13.80 carat sapphire is natural, royal blue, with no indications of heating (Nte)

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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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