Highly important diamond rivière necklace. photo Sotheby's

Est. 32,000,000—40,000,000 HKD. Lot Sold 52,180,000 HKD

NOTE: Accompanied by fifty GIA reports stating that all the diamonds are D colour, Flawless to Internally Flawless clarity, with Excellent Cut, Polish and Symmetry; and with additional diamond classification report stating that the 6.55 carat diamond has been determined to be a Type IIa diamond. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency.

Spectacular diamond pendant. photo Sotheby's

Est. 31,000,000—38,000,000 HKD. Lot Sold 35,380,000 HKD

NOTE: Accompanied by GIA report numbered 1102646044, dated 26 March 2009, stating that the 33.31 carat diamond is D colour, Internally Flawless clarity, with Excellent Polish and Symmetry; also accompanied by a diamond type classification report stating that this diamond has been determined to be a Type IIa diamond. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency.

Exquisite pair of diamond pendent earrings. photo Sotheby's

Est. 16,500,000—20,000,000 HKD. Lot Sold 19,140,000 HKD

NOTE: Accompanied by GIA reports numbered 2105316512 and 2105646824, dated 22 and 11 February 2010 respectively, stating that the 10.40 and 10.28 carat diamonds are D colour, Internally Flawless clarity, with Excellent Polish and Symmetry.

Fine diammond ring. photo Sotheby's

Simply set with a brilliant-cut diamond weighing 8.24 carats, mounted in platinum. Est. 7,200,000—8,200,000 HKD. Lot Sold 10,852,000 HKD

NOTE: Ring size: 5¾

Accompanied by GIA report numbered 12150627, dated 13 November 2009, stating that the 8.24 carat diamond is D colour, Internally Flawless clarity, with Excellent Cut, Polish and Symmetry; with additional diamond type classification report stating that this diamond has been determined to be a Type IIa diamond. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency.

Diamond ring. photo Sotheby's

Simply set with a brilliant-cut diamond weighing 10.10 carats, mounted in 18 karat white gold, photographed unmounted. Est. 5,000,000—6,300,000 HKD. Lot Sold 7,700,000 HKD

NOTE: Ring size: 5½

Accompanied by GIA report numbered 11928857, dated 2 April 2002, stating that the 10.10 carat diamond is F colour, Internally Flawless clarity, with Excellent Polish and Symmetry.

Diamond ring. photo Sotheby's

Simply set with a brilliant-cut diamond weighing 5.84 carats, to a split shank pavé-set throughout with brilliant-cut diamonds, mounted in platinum. Est. 4,600,000—5,200,000 HKD. Lot Sold 6,020,000 HKD

NOTE: Accompanied by GIA report numbered 1112251229, dated 27 October 2009, stating that the 5.84 carat diamond is D colour, Internally Flawless clarity, with Excellent Cut, Polish and Symmetry; also accompanied by a diamond type classification report stating that this diamond has been determined to be a Type IIa diamond. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency.

Diamond pendant necklace. photo Sotheby's

Suspending on a heart-shaped diamond weighing 6.43 carat, to a stylised necklace pavé-set with brilliant-cut diamonds together weighing approximately 10.00 carats, mounted in 18 karat white gold, length approximately 405mm. Est. 2,800,000—3,800,000 HKD. Lot Sold 4,940,000 HKD

NOTE: Accompanied by GIA report numbered 13338444, dated 27 April 2004, stating that the 6.43 carat diamond is D colour, Internally Flawless clarity.

Diamond ring. photo Sotheby's

Simply set with an emerald-cut diamond weighing 9.13 carats, mounted in 18 karat white gold. Est. 3,500,000—4,000,000 HKD. Lot Sold 4,220,000 HKD

NOTE: Ring size: 5¾

Accompanied by GIA report numbered 5101453696, dated 9 December 2008, stating that the 9.13 carat diamond is F colour, VVS1 clarity, with Excellent Polish.

Diamond ring. photo Sotheby's

Simply set with a brilliant-cut diamond weighing 5.01 carats, mounted in 18 karat white gold. Est. 2,900,000—3,500,000 HKD. Lot Sold 4,100,000 HKD

NOTE: Ring size: 6

Accompanied by GIA report numbered 1116102124, dated 12 November 2009, stating that the 5.01 carat diamond is D colour, VVS1 clarity, with ExcellentCut, Polish and Symmetry; with additional diamond type classification report stating that this diamond has been determined to be a Type IIa diamond. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency.

Diamond ring. photo Sotheby's

Centring on a marquise-shaped diamond weighing 5.25 carats, to a stylised split shank pavé-set with brilliant-cut diamonds together weighing approximately 1.10 carats, mounted in platinum. Est. 2,400,000—3,000,000 HKD. Lot Sold 3,140,000 HKD

NOTE: Ring size: 5¼

Accompanied by GIA report numbered 5101816508, dated 12 February 2010, stating that the 5.25 carat diamond is D colour, Internally Flawless clarity, with Excellent Polish.

Diamond bracelet. photo Sotheby's

The straight-line articulated bracelet composed of seventeen pear-, and marquise-shaped, brilliant-, and emerald-cut diamonds together weighing 30.82 carats, mounted in platinum, length approximately 170mm. Est. 1,400,000—1,700,000 HKD. Lot sold 2,660,000 HKD

NOTE: Accompanied by GIA reports stating that the diamonds ranging from 0.96 to 3.10 carats are of D to F colour, VVS1 to SI2 clarity.

Diamond ring. photo Sotheby's

Simply set with a cushion-shaped diamond weighing 5.02 carats, mounted in platinum. Est. 1,200,000—1,800,000 HKD. Lot Sold 2,540,000 HKD

NOTE: Ring size: 6

Accompanied by GIA report numbered 1102873168, dated 29 June 2009, stating that the 5.02 carat diamond is D colour, Internally Flawless clarity.

Diamond necklace. photo Sotheby's

The triple strand composed of graduated briolette diamonds together weighing approximately 136.90 carats, joined by faceted diamond beads together weighing approximately 31.70 carats, decorated to the clasp with oval diamonds flanked by baguette diamonds, the diamonds together weighing approximately 2.15 carats, mounted in platinum, length approximately 400mm. Est. 1,600,000—2,000,000 HKD. Lot Sold 1,820,000 HKD

Diamond pendant. photo Sotheby's

Set with a pear-shaped diamond weighing 4.06 carats, surrounded by brilliant-cut diamonds, accompanied by a link-chain, mounted in 18 karat white gold, length approximately 455mm. Est. 1,100,000—1,500,000 HKD. Lot Sold 1,340,000 HKD

NOTE: Accompanied by GIA report numbered 17229867, dated 8 October 2008, stating that the 4.06 carat diamond is D colour, Internally Flawless clarity.

Diamond ring. photo Sotheby's

Centring on an emerald-cut diamond weighing 8.46 carats, flanked on each side with an emerald-cut diamond weighing 0.56 and 0.57 carat respectively, mounted in 18 karat white gold. Est. 950,000—1,200,000 HKD. Lot Sold 1,160,000 HKD

NOTE: Ring size: 5½

Accompanied by GIA reports numbered 2115068767, dated 21 December 2009, stating that the 8.46 carat diamond is I colour, VS2 clarity, with Excellent Polish; 5101206248 and 51012062571, dated 24 April 2009, stating that the 0.56 and 0.57 carat diamonds are H colour, VVS1 and VVS2 clarity respectively.

Sotheby's. MAGNIFICENT JEWELS & JADEITE. 07 Apr 10. Hong Kong www.sothebys.com