natural color colour diamond encyclopedia encyclopædia naturel naturelle diamant couleur encyclopédie natural color diamond fancy color diamond color diamond encyclopedia sectionmedia stephane aisinber vivid purple pink brilliant intense pink hexagon intense pink radiant brownish pink pear shape light brown cushion chocolat brown brilliant deep reddish brown pear shape olive green emerald grayish-yellow oval deep orange brilliant brownish-yellow heart shape intense orange oval vivid yellow triangle vivid orange yellow marquise yellow cushion olive green brilliant intense yellow pear shape deep yellow triangle deep olive green marquise olive brown cushion grayish olive oval intense greenish yellow princess yellowish green bishops hat intense yellowish green radiant vivid green blue oval grey blue pear shape grey brilliant intense blue Asscher cut deep blue oval

Golden Jubilee (gold brown) Discovered in 1986 in the Premier mine in South Africa, this diamond, which was originally called the Unnamed Brown, weighed 755.5 carats as rough. With its gold brown color, the diamond had a brilliant and magical aura about its heart. It was also a very delicate stone to cut, as it had multiple tension points that made it liable to break apart at the slightest pressure. This stone was the opportunity for Master Cutter Gabi Tolkowsky to test and perfect a number of tools that he had developed, together with his team, to cut the Centenary diamond, the most beautiful white diamond ever to have been found. After a year of work, the result was a modern fire-rose cushion shaped diamond with 148 perfectly symmetrical facets, weighing 545.67 carats. The 72.2% ratio between the weight of the cut stone and that of the rough was exceptional (the ratio is usually around 50%). The Golden Jubilee is currently the largest diamond ever to have been cut. It was offered in 1997 to the King of Thailand for his golden jubilee - the 50th. anniversary of his reign.