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Diamond pendant by Black, Starr & Frost, c.1910, set with a stunning old-cut pear-shaped diamond. Hancocks, Stand C25 © 2017 MASTERPIECE LONDON LTD

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Old emerald cut diamond 'Cassiopeia' ring by Amy Burton, 2016. Hancocks, Stand C25 © 2017 MASTERPIECE LONDON LTD

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Egyptian revival gold scarab and multi gem bead necklace by Marcus & Co., c.1905. Hancocks, Stand C25 © 2017 MASTERPIECE LONDON LTD

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Diamond, ruby and platinum 'Orchestra' bracelet, attributed to Ruser, circa 1940. Hancocks, Stand C25 © 2017 MASTERPIECE LONDON LTD

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An extraordinary 41.78ct cushion cut diamond crossover ring by Hancocks. Hancocks, Stand C25 © 2017 MASTERPIECE LONDON LTD

Hancocks. 52 & 53 Burlington Arcade, London, W1J 0HH, United Kingdom. T  +44 20 74 93 89 04 - M   +44 7850 555 555 - F  +44 20 74 93 89 05 - E-mail info@hancockslondon.com - Website http://www.hancockslondon.com