Lot 187. A 4.92 carats diamond and 3.10 carats Colombian emerald ring. Estimate US$ 80,000 - 100,000 ( € 69,000 - 86,000) . © Bonhams 2001-2018 set with an emerald-cut diamond, weighing 4.92 carats, and a rectangular-shaped emerald-cut emerald, weighing...

Lot 1604. Orange-yellow Diamond, Diamond and Emerald Ring, Harry Winston. Estimate 320,000 — 480,000 HKD. Photo: Sotheby's. Centring a step-cut diamond of orange-yellow tint weighing approximately 2.65 carats, to the surround set with tapered baguette...

Platinum, diamond and emerald ring. Photo Sotheby's Centered by an emerald-cut emerald weighing 4.81 carats, flanked by two half moon-shaped diamonds weighing 3.08 and 3.01 carats, the mounting further set with baguette and bullet-cut diamonds weighing...