12 December 2007,
London, King Street
Price Realised GBP 10,625
AN ANTIQUE CAT'S EYE AND DIAMOND BROOCH
Set with a cat's eye chrysoberyl within an old-cut diamond cluster surround, mounted in gold, circa 1870, 2.1 cm diameter, in fitted grey leather Asprey case
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The so-called cat's eye effect caused by many needle-like inclusions arranged parallel to each other occurs in a few gem materials such as sapphires and quartz, but only in chrysoberyl may it be called cat's eye without any further qualification as the colour and quality are in chrysoberyl are considered the 'true cat's eye'.
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THE PROPERTY OF A GENTLEMAN