Emerald diamond ring, property from the Estate of a private…
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emerald diamond ring, property from the Estate of a private Sydney Collector, of cluster design, centring a collet-set square-cut emerald weighing approximately 0.70 carats, within a frame of similarly set diamonds, the diamonds together weighing 0.30 carats, mounted in 22ct gold, size I, gross weight approximately 7 grams, Birmingham assay marks. Proceeds from the sale of this lot will be donated to the Fred Hollows Foundation.
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- Assay / Assayed - Assaying is the testing of a metal, most commonly silver and gold to determine its ingredients and quality. In Britain, once an item of silver or gold has been assayed, a mark is stamped on it, certifying its purity. Known as hallmark, it derives its name from the Guild Hall of the Goldsmiths' Company, who recieved its Charter in 1327 giving it the power to assay and mark articles of gold and silver.
- 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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