Important Diamond, the heart-shape diamond measuring approx. 21.27 x 25.05 x 8.02 mm, and weighing 31.25 cts., within a platinum ring mount by Harry Winston. Note: Accompanied by GIA report no. 1172328707, dated September 25, 2015, stating that the diamond is D color, VVS2 clarity. Accompanied by Diamond Type Classification Report dated September 28, 2015, stating that the diamond has been determined to be a type IIa. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency. Type IIa diamonds were first identified as originating from India (particularly from the Golconda region). Provenance: From the collection of a prominent British American family. According to family oral history, this diamond was purchased in the 1880s or 1890s by the family patriarch, a successful banker who maintained residences in the United States, Great Britain, and France. Please Note: Only bidders who have preregistered with our accounting department will be eligible to bid on Lot 498. A deposit may be required. To preregister please contact William Madden at 508.970.3266 or firstname.lastname@example.org by 5PM EST on Thursday, December 3, 2015.