A magnificent diamond single-stone ring. Photo Bonhams

Splendid gems, all symbols of love, take centre stage at the Bonhams Hong Kong Fine Jewellery and Jadeite Auction on 23 November.

A symbol of love and immortality, rubies possess an inextinguishable inner fire which has been the subject of many myths and legends throughout the centuries, while the vivacious red is said to bless wearers with wealth, good health and wisdom.

Among the diverse range of jewellery being offered are two exquisite rings, their fiery stones with superb hue and quality associated with divine power. Lot 1053 is a 3.01 carats rare unheated Burmese 'Pigeon's Blood' ruby and diamond ring estimated at HK$840,000 - 1,160,000. The ruby possesses a colour and quality that is impressive, while its contemporary design lends to its beauty. Lot 1052, another ruby and diamond ring, features an unheated vibrant red Burmese ruby, of 6.00 carats, within a timeless setting of diamonds and is estimated to fetch between HK$1,030,000 - 1,300,000.

A ruby and diamond ring. Photo Bonhams

Centring on a cushion-shaped ruby, weighing 3.01 carats, within a marquise-cut diamond surround, to a reverse set with brilliant-cut diamonds, mounted in platinum, the diamonds estimated to weigh approximately 2.23 carats in total, ring size 4¾. Estimate: HK$ 840,000 - 1.2 million / US$ 110,000 - 150,000 0 £67,000 - 93,000

A ruby and diamond ring. Photo Bonhams

The oval mixed-cut ruby, weighing 6.00 carats, within a brilliant-cut diamond surround, to shoulders set with three rows of similarly-cut diamonds, the diamonds estimated to weigh approximately 1.00 carats in total, ring size 5½. Estimate: HK$ 1 million - 1.3 million / US$ 130,000 - 170,000 / £82,000 - 100,000

Known as the 'royal gem', sapphires possess a deep blue colour, symbolising truth, sincerity, faithfulness and everlasting love. Above all, sapphires are known for the protection they are said to provide. Lot 1055 is a 23.45 carat sapphire and diamond ring. The Burmese gem is unheated and its exceptional deep blue colour and notable clarity as well as its classical style contribute to its rareness and beauty. The ring is estimated at HK$4,080,000 - 5,000,000.

A sapphire and diamond ring. Photo Bonhams

The oval mixed-cut sapphire, weighing 23.45 carats, flanked by bullet-cut diamonds, mounted in platinum, the diamonds estimated to weigh approximately 1.40 carats in total, ring size 6. Estimate: HK$ 4.1 million - 5 million / US$ 530,000 - 650,000 / £330,000 - 400,000

Accompanied by a certificate from Gübelin Gemlab stating that the 23.45 carat sapphire is natural blue colour, with no indications of heating and originates from Burma (Myanmar). Report number 11055295, dated 31 May 2011

Diamonds are a universal symbol of love and synonymous with power, brilliance, strength and incomparable beauty. A highlight of the sale is Lot 1054, a sparkling 5.03 carats diamond ring of D colour and internally flawless clarity, estimate at HK$2,680,000 – 3,000,000. Last, but definitely not the least, is Lot 1056, a magnificent 14.28 carat natural light pink diamond ring. Most pink diamonds present a colour modifier such as brown, orange or purple, but this particular diamond is graded light pink by GIA, which makes it especially rare. The gem is identified by Gubelin Gem Lab as a Type IIa diamond, with a clarity grade of VVS1. This impressive diamond is estimated to fetch between HK$6,100,000 – 7,300,000.

A diamond ring. Photo Bonhams

The oval brilliant-cut diamond, weighing 5.03 carats, to brilliant-cut diamond-set shoulders, mounted in 18k white gold, the remaining diamonds estimated to weigh approximately 0.35 carats in total, ring size 6¾. Estimate: HK$ 2.7 million - 3 million / US$ 350,000 - 390,000 / £210,000 - 240,000.

Accompanied by a certificate from the Gemological Institute of America stating that the 5.03 carat diamond is D colour and IF clarity. Report number 1102449616, dated 8 Dec 2008

A magnificent diamond single-stone ring. Photo Bonhams

The pear-shaped diamond, weighing 14.28 carats, within a three-claw setting, mounted in platinum, sizing band within hoop, ring size 6¼. Estimate: HK$ 6.1 million - 7.3 million / US$ 790,000 - 940,000 / £490,000 - 580,000

Accompanied by a certificate from Gübelin stating that the diamond is Fancy Light Pink, natural colour, VVS1 clarity. There is an appendix to this certificate stating that the diamond is Type IIa. Certificate number 0502106, dated 22 Feb 2005

Accompanied by a certificate from GIA stating that the diamond is Natural Light Pink colour, VVS1 clarity. Certificate number 2145886435, dated 31 Jul 2012

Commenting on the collection offered, Graeme Thompson, head of jewellery for Bonhams Asia, said: "The international jewellery market remains very competitive at auction with buyers preferring quality above many other factors. We are therefore delighted to be offering such a diverse collection of fine jewellery, diamonds, jadeite and coloured stones, each piece being sourced with our clients at the forefront of our mind."

Highlights of the sale include:

A pair of jadeite and diamond pendant earrings. Photo Bonhams

Each set with a pear-shaped bright green jadeite cabochon of high translucency, measuring approximately 22.4 x 12.3 x 5.8mm and 22.2 x 12.4 x 5.7mm, within a brilliant-cut diamond surround, to a surmount set with a pear-shaped diamond, each weighing 1.01 carats, within a brilliant-cut diamond surround, linked by a marquise-cut diamond, mounted in 18k white gold,the remaining diamonds estimated to weigh approximately 3.20 carats in total, earring length 4.5cm. Estimate: HK$ 1.3 million - 1.6 million / US$ 170,000 - 210,000 / £100,000 - 130,000

Accompanied by a certificate from the Hong Kong Jade & Stone Laboratory stating that the jadeites are natural and no resin was detected. Report number KJ 76257 and KJ 76260, both dated 19 Sep 2012

Accompanied by two certificates from the Gemological Institute of America stating that both 1.01 carat diamonds are D colour and VS2 clarity. Report numbers 1127576049 and 5126937900, dated 12 Oct 2011 and 7 Feb 2012 respectively

A diamond ring. Photo Bonhams

The oval brilliant-cut diamond, weighing 5.42 carats, flanked by half-moon cut diamonds, mounted in 18k white gold, the remaining diamonds estimated to weigh approximately 0.75 carats in total, ring size 5. Estimate: HK$ 1.4 million - 1.5 million / US$ 180,000 - 190,000 / £110,000 - 120,000

Accompanied by a certificate from the Gemological Institute of America stating that the 5.42 carat diamond is D colour and VS2 clarity. Report number 2105875739, dated 29 Jun 2009

A jadeite and diamond brooch. Photo Bonhams

Set with vari-shaped intense green carved jadeite of very good translucency, the largest measuring approximately 29.4 x 10.0 x 3.2mm, carved as lotus leaves, to a foliate surround set with single and brilliant-cut diamonds, mounted in platinum, the diamonds estimated to weigh approximately 1.50 carats in total, brooch length 6.9cm. Estimate: HK$ 900,000 - 1.1 million / US$ 120,000 - 140,000 / £72,000 - 88,000

Accompanied by a certificate from the Hong Kong Jade & Stone Laboratory stating that the jadeite is natural and no resin was detected. Report number EXKJ 2236(1-2), dated 21 June 2012

A star sapphire and diamond cluster ring. Photo Bonhams

The oval star sapphire cabochon, weighing 16.00 carats, within a three-tiered brilliant-cut diamond surround, mounted in 18k white gold, the diamonds estimated to weigh approximately 3.80 carats in total, ring size 7½. Estimate: HK$ 932,000 - 1.1 million / US$ 120,000 - 140,000 / £75,000 - 88,000

A sapphire, diamond and ruby ring and earring suite (2). Photo Bonhams

The ring set with a sugarloaf sapphire weighing approximately 6.28 carats, within a pear-shaped diamond surround, accented with circular-cut rubies, to a reverse set with brilliant-cut diamonds, accompanied by a pair of matching earrings, mounted in platinum, the diamonds estimated to weigh approximately 3.65 carats in total to the ring and 5.94 carats in total to the earrings, the rubies estimated to weigh approximately 0.86 carats in total to the ring and 1.84 carats in total to the earrings, ring size 6¼, earring length 3.1cm (2). Estimate: HK$ 710,000 - 840,000 / US$ 92,000 - 110,000 / £57,000 - 67,000

Accompanied by two certificates from the Gem Research Swiss Lab stating:

The 6.28 carat sapphire is natural blue colour, with no indications of thermal treatment and originates from Burma (Myanmar). Report number GRS2012-041491, dated 30 Apr 2012

The total 7.31 carat sapphires are natural blue colour, with no indications of thermal treatment and originate from Burma (Myanmar). Report number GRS2012-041493, dated 24 Apr 2012

Bonhams. 23 Nov 2012 16:00 CST Hong Kong. Fine Jewellery & Jadeite