Suite of 18 karat gold, rock crystal, diamond and colored stone jewelry, Boucheron. Photo: Sotheby's.

The necklace composed of fluted rock crystal segments set with 30 cabochon emeralds weighing 6.57 carats, spaced by 30 oval and pear-shaped cabochon rubies weighing 13.32 carats, further set with round diamonds weighing 9.06 carats, internal circumference 13 inches,with French assay and workshop marks; the earclips of similar design set with two cabochon rubies weighing .55 carat and two cabochon emeralds weighing .43 carat, accented by round diamonds weighing .85 carat,with French assay, workshop and maker's marks; the fluted rock crystal ring set with one oval-shaped pink sapphire weighing 1.64 carats and one oval-shaped sapphire weighing 1.45 carats, accented by round diamonds weighing .87 carat, size 7, signed Boucheron, with French assay and workshop marks. With signed envelope, box and pouch. Estimation 20,000 — 30,000 USD

Sotheby's. Important Jewels. New York | 24 sept. 2013 - http://www.sothebys.com