Pair of 18ct white gold, keshi pearl and diamond earrings, Autore, each terminating in an articulated cluster of black keshi pearls measuring 3.00 mm to 6.00 mm surmounted by a bell cap decorated with brilliant-cut diamonds supported from wire hooks pave-set to the front with diamonds, the diamonds together weighing approximately 0.37 carat, length approximately 40 mm, signed Autore., accompanied by an Autore certificate of authenticity and pouch.
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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.
- Keshi Pearls - Keshi is a Japanese word meaning 'poppy seed', but not an indicator of the true size of the pearl. But keshi pearls are small, and are usually irregular in shape. They are sold by weight rather than size as is usual with pearls. Originally a by-product of pearl farming, most Keshi pearls are now deliberately cultivated.
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