A sapphire ring centering a cushion-cut sapphire, weighing 6.75 carats, flanked by calves-head-cut diamond shoulders; mounted in platinum; size: 6 1/2. Estimate: $18,000 - 25,000 - Unsold. Bonhams. Fine Jewelry, 16 Dec 2008. San Francisco, Los Angeles...

A 12.19 carats Sapphire and Diamond Ring Set with a cushion-cut sapphire, weighing approximately 12.19 carats, flanked on either side by a baguette-cut diamond, with circular and baguette-cut diamond pierced shoulders, mounted in platinum - Price Realized...