Lot 200. 18-karat white gold, tanzanite and diamond necklace. Estimate $40,000–60,000. Photo: Sotheby's.

Of graduated design, composed of 41 tanzanite beads weighing a total of 1043.00 carats, the rondelles and clasp set with round diamonds weighing approximately 20.00 carats, length 21¼ inches.

Accompanied by AGL report no. CS 46709 A and B, dated October 26, 2011, stating that the sapphires are of Madagascar origin, with indications of low temperature heating.

Sotheby's. Magnificent Jewels Including the Legendary Stotesbury Emerald, New York, 25 Apr 2017, 10:00 AM