18 karat white gold, ruby bead, ruby and diamond necklace. Photo: Sotheby's.

The multi-strand necklace composed of numerous ruby beads measuring approximately 5.8 to 3.0 mm, set with round diamonds weighing approximately 9.00 carats, the sides and clasp further set with oval-shaped rubies weighing approximately 2.10 carats, length 22½ inches. Estimation 12,000 — 18,000 USD

PROPERTY FROM THE COLLECTION OF JEAN VAN WAVEREN 

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