Bonhams saw excellent results at its June 19 jewellery auction in New York, with a brilliant rectangular 12-carat diamond ring selling as top lot.
The ring achieved $482,500, more than double its pre-sale estimate. It was consigned from the Beverly Hills collection of Mrs Daniel J Egey, wife of the late steel tycoon.
In total, the auction realised an impressive $5.3m, with 90% of lots sold by value.
While US bidders made up the slight majority of those in attendance, many of the top lots went to telephone bidders from across the world.
New York is a well-established hub for major jewellery sales, with both a flawless 75-carat white diamond selling for $14.2m and the world-famous pink Princie Diamond selling for $39.3m in April.
As ever, coloured diamonds proved popular in the Bonhams auction, with a 16.03-carat fancy deep yellow diamond ring from the collection of a Florida gentleman realising $290,500.
The trend for art deco jewellery also continued, with a 1923 Oscar Heyman & Brothers diamond and sapphire bracelet more than tripling its estimate to sell from $92,500.
With a striking geometric design, the bracelet features French-cut sapphires and diamonds weighing a combined 24.60 carats.
"This was an extraordinary day and we're very pleased with the results. We are witnessing a renewed strength in the market in all categories," commented Bonhams' head of US jewellery, Susan Abeles.
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