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Pictured above are two of the choice pieces: a gold and ‘hot pink’ tourmaline dragonfly ring c.1890 (estimate $4000-6000) and a gold, platinum, moonstone and diamond pendant (estimate $20,000-30,000).

While the ring is unsigned the pendant, formed as a female head with a serene carved moonstone face, has the maker’s mark for the Parisian goldsmith Louis Aucoc (1850-1932) whose family firm gave a certain René Lalique his apprenticeship from 1874-76.

This pendant was last sold at Sotheby’s in 2011 when it was minus its chain and slide.