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The wife and husband team of Nancy and David Stone have long been recognized as pioneers of modern jewelry design since launching Nancy and David in 1980.

Some thoughts...

Sotheby's breaks record for a round white diamond

Nancy and David

A 28 ct. D internally flawless diamond set a per-carat record at Sotheby’s April 8 Hong Kong sale of Magnificent Jewels and Jadeite. 

The stone, which had excellent cut, polish, and symmetry, achieved $6.9 million, or $239,352 per carat—a world record per-carat price for a round white diamond.

Other notable sales: 

  • A matched pair of diamond pendant earrings, each 8 cts., brought in $2.82 million. 
  • A 19.54 ct. cushion-shaped Colombian emerald and diamond ring took in $1.93 million, above its $1 million to $1.5 million estimate.