Burmese rubies have long been considered as the most desirable rubies in the world and the crimson glow that very fine examples possess merit the descriptive term of 'pigeon blood' for their high colour intensity. The famed pigeon blood rubies occur in the deposits from the legendary Mogok Valley, in the Katha district, north east of Mandalay. Famous for its rare combination of rich colour intensity and red UV-fluorescence, Mogok rubies also exhibit a velvety softness caused by the tiny needle inclusions which scatter light throughout the stone. Of all the locations in which rubies are found, the Mogok region is renowned for producing the distinctive intense red colours and bright red fiery brilliance, which are the benchmark by which all fine rubies are judged. Exceptional untreated rubies from Mogok over five carats are a true rarity in the market. 'The Emperor Ruby' is exceptional on every level, from its pigeon blood colour to its outstanding purity, it can be considered as a treasure of nature.

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 17 mai 2016, 10:00 AM