Lot 99. Fine Natural Vivid Red colour Mozambican Ruby and Diamond Ring. Estimate HK$2,000,000 - 3,000,000 (US$256,000 - 385,000). Courtesy Tiancheng International. 

Centring on an oval ruby weighing 5.05 carats, flanked by heart-shaped rubies weighing 2.11 and 2.09 carats respectively, embellished to the basket with brilliant-cut diamonds weighing approximately 1.25 carats, mounted in 18 karat white gold. Ring size: 6¼

Accompanied by SSEF report numbered 83755, dated 25 January 2016, stating that the 5.059 carat ruby is natural, Red colour of strong saturation, of Mozambican origin, with no indications of heating; 

GRS reports numbered GRS2014-083826, GRS2014-075688 and GRS2015-031362, dated 1 September, 7 August 2014 and 28 March 2015 respectively, stating that the 5.05, 2.11 and 2.09 carat rubies are natural, Vivid Red colour, of Mozambican origin, with no indication of thermal treatment; along with three appendices to three reports stating that 'This vivid red Mozambique ruby is reminiscent in colour saturation of "GRS-type pigeon blood ruby" (without strong fluorescence).'; 

Lotus report numbered 9437-0499, dated 22 May 2015, stating that the 5.05 carat ruby is natural, Red colour, of vivid saturation and medium-deep tone, of Mozambican origin, with no indications of heating or treatment; along with a comment stating that 'the highly saturated crimson colour of this gem earns it the Lotus "Pigeon's Blood" distinction.'; 

Lotus premium report numbered 5334-6743, dated 18 January 2016, stating that the 5.05, 2.11 and 2.09 carat rubies are natural, Red colour, of vivid saturation and medium-deep tone, of Mozambican origin, with no indications of heating or treatment; along with a colour type comment stating that 'the highly saturated crimson colour of the 5.05 and 2.11 carat gems earns them the Lotus "Pigeon's Blood" distinction.'.