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Lot 96
Important Ruby and Diamond Necklace
HK$2,400,000 - 3,400,000
US$308,000 - 436,000

The necklace set with sixty oval, cushion- and pear-shaped rubies together weighing 67.83 carats, decorated with variously-shaped diamonds together weighing 58.13 carats, mounted in 18 karat white gold, length approximately 384mm.

Accompanied by 38 GRS reports, stating that the 55.54 carat rubies ranging from 3.23 to 0.98 carat are natural, thirty four of Vivid Red, three of Intense to Vivid Red, and one of Vivid to Deep Red colour (all of GRS type "Pigeon's Blood" colour), of Burmese origin (one of Mogok), with no indications of thermal treatment;
Gübelin report numbered 20091081, dated 12 October 2020, stating that the 67.83 carat rubies are natural, Red colour (A few of the rubies are called Pigeon Blood Red), of Burmese origin, with no indications of heating; along with an information sheet, stating that 'Large rubies of gem-quality are rarely found in nature...The demand for natural, unheated rubies kept growing while the supply of such gems remains highly limited, making natural rubies of gem-quality from all major sources, such as Burma (Myanmar), Mozambique, Madagascar, Kenya, Tanzania, Vietnam, Afghanistan and Tajikistan, difficult to find .';
Thai report and premium book numbered 150776, dated 26 May 2020, stating that the 67.83 carat rubies are natural, Red to Vivid Red colour, of Burmese origin, with no indications of heating, with trade color descriptor, stating that 'The color of a majority of the rubies in the necklace is commonly known in the trade as "Pigeon Blood"; with a letter, stating that 'The rubies in report 150776 colors are red to vivid red which matches the color description of prized rubies. The color of a majority of the rubies in the necklace is commonly known in the trade as "Pigeon Blood". This necklace displays an exceptional array of well-matched rubies which show no indications of heating. Remarkable gemstones such as these are highly appreciated in the market.'.

As one of the five most valuable gemstones, rubies are highly desirable on the market for its flaming red hue and vibrancy. Both ruby and sapphire are corundum, a crystalline form of aluminium oxide. Corundum is colourless and transparent in its purest form. The red colour comes from traces of chromium oxide, making corundum ruby. The presence of chromium determines the intensity of the red colour whilst the trace of iron content that distinguishes the characteristics and various hue of rubies.
Rubies are produced in many countries in the world, including Burma, Mozambique, Sri Lanka, and Madagascar. Among all, Burmese rubies are the most precious for their appealing vivid red hue and the decreasing supply of rubies coming out of Burma continues. Under the condition, the price of Burmese rubies remains high and soaring in the international gem market. Traditional fine Burmese ruby has a pure, vibrant red colour. The saturated red hue demonstrates a natural glowing, red fluorescence which is described as “pigeon’s blood”. The pigeon’s blood rubies are exceptional and rare which make them so valuable, but their beauty is so coveted and highly prized by gemstone connoisseurs.
In spring 2021, Tiancheng International is delighted to present a natural unheated Burmese ruby necklace comprising 60 vibrant rubies of outstanding saturation weighing 67.83 carats in total. Majority of the rubies possess vivid red which is distinguished as “pigeon’s blood” colour by gemological laboratories Gübelin and GRS. Accenting with sparkling white diamonds weighing 58.13 carats, this irresistible necklace is a divine treasure to pass down generations.