Sotheby's, London, March 2009

Lot 138 Sapphire and Diamond Ring

Designed as an oval collet-set sapphire weighing 8.11 carats within a border of brilliant-cut diamonds, size L½.

Accompanied by a report from the GRS, no.GRS2006-112580T, stating that the sapphire weighing 8.11 carats is natural with no indications of thermal treatment and revealed characteristics corresponding to Kanchanaburi (Thailand)