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18 Karat White Gold, Rubellite and Diamond Necklace, Michele della Valle. photo Sotheby's

The articulated graduated necklace set with cushion-shaped rubellites weighing a total of 274.33 carats, accented by small round diamonds weighing 28.34 carats, length 15 inches, signed Michele della Valle, numbered 100746. Est. 90,000—120,000 USD. Lot Sold 128,500 USD

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Pair of 18 Karat White Gold, Rubellite and Diamond Pendant-Earclips, Michele della Valle. photo Sotheby's

The tops designed as clusters set with pear-shaped rubellites, and round and marquise-shaped diamonds weighing approximately 5.85 carats, supporting large polished pear-shaped rubellite drops measuring approximately 30.0 by 23.0 mm., maker's mark for Michele della Valle. With signed box. Est. 25,000—35,000 USD. Lot Sold 56,250 USD

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18 Karat White Gold, Rubellite Bead and Diamond Necklace, Michele della Valle. photo Sotheby's

The graduated double-strands composed of rubellite beads weighing approximately 722.00 carats, the terminals and clasp pavé-set with round diamonds weighing 5.51 carats, the tassel ends set with small rubellite beads, length 23 inches, adjustable, unsigned. Est. 30,000—40,000 USD. Lot Sold 50,000 USD

09

Platinum, Rubellite and Diamond Ring. photo Sotheby's

The oval rubellite weighing 52.32 carats, flanked by tapered baguette diamonds, size 6¼. Est. 10,000—15,000 USD. Lot Sold 31,250 USD

Sotheby's. Magnificent Jewels, 09 Dec 10, New York www.sothebys.com