A diamond ring. Photo Christie's Image Ltd 2014. Set with a cut-cornered square-cut diamond, weighing approximately 10.88 carats, to the tapered baguette-cut diamond shoulders, mounted in platinum, ring size 6½ with sizing beads. Estimate CHF900,000 –...

Lot 245. A magnificent coloured diamond necklace, by Leviev. Estimate CHF6,300,000 – CHF9,000,000 ($7,184,136 - $10,263,051). Price realised CHF 9,013,000 . Photo Christie's Image Ltd 2014 The pendant centering upon a light pink cut-cornered square-cut...