DIAMOND RING AND CUSTOM JACKET. American, 20th century. Platinum and diamond with central prong set round brilliant diamond approx. 1.20ct, I-J color, VVS clarity, surrounded by 12 baguette and 20 round prong set diamonds, approximately 2.80ct tw, G-H color, VS clarity. Custom made jacket is 18k yellow gold. Sold at Garth's Auctions on December 9, 2015 for $4,800.