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An American 18k textured gold and diamond cocktail ring with synthetic Columbian "Chatham" emerald crystals. - image-1

An American 18k textured gold and diamond cocktail ring with synthetic Columbian "Chatham" emerald crystals. - image-2

An American 18k textured gold and diamond cocktail ring with synthetic Columbian "Chatham" emerald crystals. - image-3

An American 18k textured gold and diamond cocktail ring with synthetic Columbian "Chatham" emerald crystals. - image-4

An American 18k textured gold and diamond cocktail ring with synthetic Columbian "Chatham" emerald crystals.

Large, domed bezel and shoulders with Brutalist style pierced relief, centrally set with column shaped lab grown Colombian emerald crystals and three small brilliant-cut diamonds (in total c. 0.60 ct, H/I, vs). Hallmarks: Fineness 18K. Ring size 66. Weight 26.36 g.
1970s.

Founded 75 years ago by San Francisco-born chemist Carroll Chatham, the American company Chatham Inc. grows Colombian emerald crystals in a secret, lengthy process. The crystals grow for about nine months in the laboratory and have a perfect colour.

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Lot 198 Dα

An American 18k textured gold and diamond cocktail ring with synthetic Columbian "Chatham" emerald crystals.