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

The Allnatt (vivid yellow) The Allnatt is a 102.29-carat, cushion cut diamond that has been certified by the GIA as fancy vivid yellow and VS2 clarity. It is named after its former owner, Alfred Ernest Allnatt, who was a soldier, sportsman, and active patron of the arts. Its probable origin is the De Beers mine. Mr. Allnatt purchased this diamond in the early 1950s, and commissioned Cartier to make a floral brooch setting for it. The end result was a platinum flower with five petals, a stem and two leaves all set with diamonds. The Alnatt was auctioned by Christies in Geneva in 1996, where it reached a price of $3,043,496. In 2003, the Allnatt was displayed at the "Splendour of Diamonds" exhibition at the Smithosonian Institute in Washington, D.C. Its current owner is S&T Bancorp.