Pair of Fancy Light Pink Diamond, Pink Diamond and diamond pendent earrings. Photo Sotheby's

Each suspending on a pear-shaped fancy light pink diamond weighing 2.74 and 2.96 carats respectively, surrounded by brilliant-cut pink diamonds, to an outer surround set with brilliant-cut diamonds, surmounted by three heart-shaped pink diamonds, completed by a brilliant-cut diamond-set hook, the pink diamonds and diamonds altogether weighing approximately 1.35 carats, mounted in 18 karat pink and white gold. Estimate 3,500,000—4,000,000 HKD. Lot Sold 3,620,000 HKD

Accompanied by GIA reports numbered 1122137339 and 2125064747, dated 27 May and 25 May 2010, stating that the 2.74 and 2.96 carat diamonds are natural, Fancy Light Pink colour, SI1 and VS2 clarity respectively.

Fancy Intense Orangy Pink Diamond and diamond ring. Photo Sotheby's

Centring on a heart-shaped fancy intense orangy pink diamond weighing 3.32 carats, framed by brilliant-cut diamonds, mounted in platinum. Estimate ,500,000—3,500,000 HKD. Lot Sold 3,020,000 HKD

Ring size: 6

Accompanied by GIA report numbered 1122718854, dated 2 November 2010, stating that the 3.32 carat diamond is natural, Fancy Intense Orangy Pink colour, VVS1 clarity.

Fancy Light Brownish Pink diamond, Pink diamond and diamond ring. Photo Sotheby's

Centring on a lozenge-shaped fancy light brownish pink diamond weighing 2.74 carats, surrounded by brilliant-cut diamonds and pink diamonds together weighing approximately 1.25 carats, mounted in 18 karat pink and white gold. Estimate 750,000—850,000 HKD. Lot Sold 920,000 HKD

Ring size: 6½

Accompanied by GIA report numbered 17426091, dated 18 July 2008, stating that the 2.74 carat diamond is natural, Fancy Light Brownish Pink colour, VS2 clarity.

Very light pink diamond and diamond ring-pendant. Photo Sotheby's

The ring centring on a pear-shaped very light pink diamond weighing 3.29 carats, surrounded by a double-frame set with brilliant-cut diamonds extending to the split shoulders, mounted in 18 karat white and pink gold, detachable pendant and retractable pendant loop fitting.. Estimate 350,000—450,000 HKD; Lot Sold 620,000 HKD

Ring size: 5¼

Accompanied by GIA report numbered 15135222, dated 25 May 2006, stating that the 3.29 carat diamond is natural, Very Light Pink colour, VVS2 clarity.

Fancy Light Pink diamond, Pink diamond and diamond pendent. Photo Sotheby's

Suspending on a marquise-shaped fancy light pink diamond weighing 1.52 carats, surmounted by a brilliant-cut diamond weighing 0.26 carat and a circular-cut pink diamond, each framed by circular-cut diamonds of similar colour, accompanied by an 18 karat white and pink gold chain necklace spectacle-set with brilliant-cut diamonds and pink diamonds, mounted in platinum and 18 karat pink gold, length approximately 400mm. Estimate 350,000—400,000 HKD. Lot Sold 500,000 HKD

Accompanied by HRD report numbered 20034110001, dated 7 July 2003, stating that the 1.52 carat diamond is natural, Fancy Light Pink colour; also accompanied by GIA report numbered 14221131, dated 13 September 2005, stating that the 0.26 carat diamond is E colour, VS1 clarity.

Faint Pink diamond, Pink diamond and diamond ring. Photo Sotheby's

Set diagonally with a marquise-shaped faint pink diamond weighing 1.31 carats, to stylised shoulders set with baguette pink diamonds and diamonds together weighing approximately 1.50 carats, mounted in 18 karat white and pink gold. Estimate 150,000—200,000 HKD. Lot Sold 212,500 HKD

Ring size: 6

Accompanied by GIA report numbered 2125897703, dated 22 December 2010, stating that the 1.31 carat diamond is natural, Faint Pink colour, VS1 clarity.

Pink diamond and diamond pendant. Photo Sotheby's

The cross pendant centring on an oval pink diamond framed by brilliant-cut pink diamonds, the five emerald-cut diamonds together weighing approximately 2.05 carats, each framed by brilliant-cut diamonds, mounted in 18 karat pink and white gold, completed by a link chain spectacle-set with brilliant-cut diamonds, length approximately 400mm. Estimate 65,000—80,000 HKD. Lot Sold 212,500 HKD

Pink diamond and diamond ring. Photo Sotheby's

Of bombé form, set in the centre with circular-cut pink diamonds, decorated on each side with brilliant-cut diamonds, the pink diamonds and diamonds together weighing approximately 2.70 carats, mounted in platinum and 18 karat pink gold. Estimate 50,000—70,000 HKD. Lot Sold 62,500 HKD

Ring size: 6¼

Sotheby's. Magnificent Jewels and Jadeite, 06 Apr 11, Hong Kong www.sothebys.com