Lot 371. Moonstone and diamond necklace, Janesich, circa 1915. Estimate 7,000 — 10,000 GPB. Photo: Sotheby's.

Set to the centre with an oval carved moonstone cameo depicting a maenad holding a tympanon dancing in Bacchic ecstasy, accented to the cardinal points with geometric motifs millegrain-set with rose diamonds, to a circular-cut and rose diamond surmount with trace link chain, length approximately 400mm, signed Janesich, French assay and maker’s marks, fitted case stamped John Durden.

Sotheby's. Fine Jewels, London, 15 Mar 2016, 10:00 AM