To say the Jubilee Ruby is worthy of a king would be no exaggeration. Until the middle of the 19th century, only the Sovereign of Burma or an individual deemed worthy by him would have been allowed the privilege of possessing such a magnificent gemstone. Although rubies can be found in various countries, it is the legendary mines of Burma which have yielded the most beautiful gems over the centuries. Brought to the attention of the Europeans at the beginning of the fifteenth century, Burmese rubies have not been surpassed in quality by any other mine. Historically they have been mined in the Mogok Valley in the northern part of Burma which is only two miles long and a half a mile wide. One of the main reasons is due to the high chromium content in the ground which accounts for the very specific color, an extremely saturated red often referred to as pigeon’s blood. Another factor is their natural fluorescence which has the effect of making the stone “come alive” and appear internally illuminated. Whereas emeralds, sapphires, and diamonds regularly appear on the market in important sizes, large rubies of Burmese origin are exceedingly rare. To find an almost circular cut unheated gem weighing more than fifteen carats with near perfect crystallization is the dream of every gemstone connoisseur. Set in a distinctive gold and diamond mounting by the legendary firm, Verdura, the Jubilee Ruby is the most important ruby of its caliber to be offered for sale at auction in the United States for over twenty five years and Christie’s is proud to present it on our 250th year anniversary.Bibliography:E. Streeter, Precious stones and gems, 1898

Set with an oval-shaped ruby, weighing approximately 15.99 carats, within a circular-cut diamond and polished gold surround, to the trifurcated gold hoop, ring size 7 1/4, mounted in platinum and 18k gold
Signed Verdura
Accompanied by report no. CS 1074180 dated 11 March 2016 from the AGL American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of this ruby would be classified as Burma (Myanmar), with no gemological evidence of heat. Also accompanied by a letter stating this Burmese ruby has received the highest and most prestigious TQIR classification of Exceptional

Accompanied by report no. 80019 dated 27 April 2015 from the SSEF Swiss Gemmological Institute stating that the analysed properties confirm the authenticity of this transparent ruby, no indications of heating, origin: Burma (Myanmar); also accompanied by an appendix stating that the ruby possesses extraordinary characteristics and merits special mention and appreciation. The ruby has a remarkable size and weight of 15.991 cts and exhibits an attractive vivid colour, combined with fine purity. The inclusions found by microscopic inspection represent the hallmarks of classical ruby mines in the Mogok valley in Burma (Myanmar), well known for its wealth in gems since historic times. Its attractive vivid red colour is due to a combination of well-balanced trace elements in this gemstone, characteristic for the finest rubies from Mogok. In addition to these qualities, this ruby has been spared exposure to heat treatment and its clarity and colour are thus all natural. A natural ruby from Burma of this size and quality is very rare and thus can be considered an exceptional treasure

With report no. 15090007 dated 3 September 2015 from Gübelin Gem Lab stating that gemmological testing revealed characteristics consistent with those of rubies originating from Burma (Myanmar), no indications of heating

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