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 Mouna (intense yellow) The Mouna diamond is a 112.53-carat, VS1 clarity, intense yellow diamond. As of November 1995, it was the largest fancy intense yellow diamond ever to have been graded by the Gemological Institute of America (GIA). This cushion-shaped stone measures 26 mm in diameter and was set by Bulgari in a baguette-cut mount. It was owned by Mouna Ayoub, the former wife of a Saudi Arabian businessman, before being sold by Christie's in Geneva for $3,258,000 in November 1998.