sugarloaf cabochon sapphire

Sapphire and diamond ring, Bulgari. photo courtesy Sothebys The cushion-shaped sapphire weighing 13.08 carats, to a mount set with baguette, fancy- and brilliant-cut diamonds, mounted in white gold, size 50, signed Bulgari. Est. 70,000—100,000 CHF. Lot Sold 98,500 CHF Accompanied by Gübelin report no. 9406059, dated June 30th, 1994, stating that the sapphire is of Burmese origin, with no evidence of thermal treatment. Sapphire and diamond ring, Bulgari. photo courtesy Sothebys Centring on a sugarloaf cabochon... [Lire la suite]

An important sapphire and diamond bracelet, by Mouawad. Photo: Christie's Images Ltd., 2010 Of flexible design, the bracelet mounted with a sugarloaf cabochon sapphire weighing 180.86 carats, set within an emerald-cut diamond demi-surround to the tapered lattice-work band composed of a series of vari-cut diamonds and circular-shaped cabochon sapphires, with presentation case, 18.0cm long. Smaller sapphires stated to weigh a total of 11.07 carats. Diamonds stated to weigh a total of 50.36 carats. Stated to be mounted in 18k... [Lire la suite]

Sapphire and diamond bracelet. Photo Sotheby's Cushion-shaped sapphires weighing 6.87, 9.58, 8.97, 10.68, 14.62, 18.57, 10.83, 10.43, 10.03, 8.46 and 6.00 carats, emerald-cut diamonds weighing approximately 7.10 carats, mounted in platinum, length 7 inches. Est. 400,000—600,000 USD - Lot Sold.  Hammer Price with Buyer's Premium:  482,500 USD NOTE: Accompanied by AGTA report no. 96033312 stating that the sapphires are of Sri Lakan origin; indications of heating. Sapphire and diamond ring. Photo Sotheby's... [Lire la suite]

An Impressive Unheated Ceylon 32.08 carats Sapphire and Diamond Ring Set with a sugarloaf cabochon unheated sapphire weighing approximately 32.08 carats, within a pavé-set diamond surround, to the polished gold half hoop, mounted in platinum, size 6 1/2.   With report no. GRS2003-03976 dated 25 March 2003 from the GRS Gem Research Swiss Lab, stating that the sapphire is natural color, no indications of thermal treatment, of Sri Lanka (Ceylon) origin. Est. CHF 38,000-50,000 Philips de Purry & Company.... [Lire la suite]