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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 gold. With maker's mark 'RM' for Robert Mouawad  Estimate $250,000 - $350,000. Price Realized $932,500

Accompanied by report no. 57096 dated 19 August 2010 from SSEF Swiss Gemmological Institute stating that the sapphire weighing 180.84 carats is of Ceylon (Sri Lanka) origin, with no indications of heating

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A sapphire and diamond pendent necklace/brooch, by Mouawad. Photo: Christie's Images Ltd., 2010

The detachable pendant/clip brooch mounted with a sugarloaf cabochon sapphire weighing 131.17 carats, collet-set within an elaborate diamond mount composed of a series of vari-cut diamonds and circular-shaped cabochon sapphires to the similarly-set princess-cut diamond quatrefoil surmount, suspended from a similarly-set diamond and sapphire tapered necklace of flexible latticework design, with maker's presentation case, necklace inner circumference 40.0cm, pendant 7.0cm long. Smaller sapphires stated to weigh a total of 21.72 carats. Diamonds stated to weigh a total of 81.94 carats. Stated to be mounted in 18k gold. Signed Mouawad  Estimate $180,000 - $250,000. Price Realized $296,500

Accompanied by report no. 57097 dated 19 August 2010 from SSEF Swiss Gemmological Institute stating that the sapphire weighing 131.17 carats is of Ceylon (Sri Lanka) origin, with no indications of heating

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An important sapphire and diamond ring, by Mouawad. Photo: Christie's Images Ltd., 2010

The sugarloaf cabochon sapphire weighing 26.12 carats mounted within a rectangular-shaped diamond surround accented by circular-shaped cabochon sapphires to the rectangular-shaped diamond shoulders and plain hoop, with presentation case, ring size 5¾. Diamonds stated to weigh a total of 13.61 carats. Circular-shaped cabochon sapphires stated to weigh a total of 0.63 carats. Stated to be mounted in 18k gold. Signed Mouawad  Estimate $100,000 - $180,000. Price Realized $272,500

Accompanied by report no. 57098 dated 19 August 2010 from SSEF Swiss Gemmological Institute and by report no. 1008084 dated 23 August 2010 from Gübelin Gem Lab stating that the sapphire weighing 26.12 carats is of Kashmir origin, with no indications of heat treatment

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A pair of sapphire and diamond ear clips, by Mouawad. Photo: Christie's Images Ltd., 2010

Each ear clip mounted with a sugarloaf cabochon sapphire set within a rectangular-shaped diamond surround to the similarly-set festoon detail accented by circular-shaped sapphire cabochons, with presentation case, 3.0cm long. Sugarloaf cabochon sapphires stated to weigh a total of 32.85 carats. Diamonds stated to weigh a total of 18.10 carats. Circular-shaped cabochon sapphires stated to weigh a total of 0.62 carats. Stated to be mounted in 18k gold. Signed Mouawad (2). Estimate $30,000 - $40,000. Price Realized $68,500

Christie's. Jewels and Watches : The Dubai Sale Including The Fabulous Parures: An Important Private Collection, 27 October 2010, Dubai www.christies.com