Diamond rivière, late 19th century. Photo: Sotheby's Designed as a graduated row of thirty eight circular-cut and cushion-shaped diamonds, the largest one weighing 10.10 carats, mounted in silver and gold, length approximately 400mm, case. Estimate 300,000—500,000...

A magnificent diamond ring. photo Christie's Ltd 2010 The cut-cornered rectangular-cut diamond weighing 40.21 carats, to the trapeze and epaulet-shaped diamond shoulders, mounted in platinum, ring size 6. Estimate on request. Price Realized CHF5,699,000...