Lot 187. A 10.02 carats Type IIa oval brilliant-cut diamond ring. Estimate $1,000,000 – $1,500,000. Photo Christie's Image Ltd 2016. Set with an oval brilliant-cut diamond, weighing approximately 10.02 carats, flanked on either side by a pear-shaped diamond,...

A 6.46 carats Type IIa diamond ring, by Van Cleef & Arpels (Estimate $350,000 – $450,000) and A 20.97 carats Burma sapphire and diamond ring Estimate $150,000 – $200,000 . Photo Christie's Image Ltd 2015 A 6.46 carats Type IIa diamond ring, by Van Cleef...