Skip to main content

This auction has ended. View lot details

You may also be interested in

Own a similar item?

Submit your item online for a free auction estimate.

A superb diamond ring image 1
A superb diamond ring image 2
A superb diamond ring image 3
A superb diamond ring image 4
A superb diamond ring image 5
A superb diamond ring image 6
A superb diamond ring image 7
Lot 178

A superb diamond ring

Amended
19 September 2017, 13:00 EDT
New York

Sold for US$1,807,500 inc. premium

Own a similar item?

Submit your item online for a free auction estimate.

How to sell

Looking for a similar item?

Our Jewellery specialists can help you find a similar item at an auction or via a private sale.

Find your local specialist

Ask about this lot

A superb diamond ring

centering a cut-cornered rectangular-shaped step-cut diamond, weighing 16.90 carats, set with round brilliant-cut diamond shoulders; estimated remaining diamond weight: 1.15 carats; mounted in platinum; size 5 3/4

Footnotes

Accompanied by GIA report # 11112333, dated August 31, 2016, stating the diamond as: D color, Internally Flawless clarity.

Accompanied by a diamond type classification report, dated August 31, 2016, stating the 16.90 carats diamond is a Type IIa diamond.


By definition, rare is distinctive in its superlative nature; something of unusual quality, merit or appeal. This distinctive stone embodies rarity according to every criterion by which a diamond is measured: color, cut, clarity and transparency.

This diamond has been awarded the highest color grade of D – also known as colorless or exceptional white – and possesses internally flawless clarity. Only the skill of a master diamond cutter can produce a stone devoid of inclusions which also possesses excellent polish and symmetry.

In addition to this rare combination of features, the diamond is also a Type IIa, a characteristic which defines it as almost pure carbon. Type IIa diamonds make up less than 2% of all natural diamonds and are so exceptional because they contain very little nitrogen, or none at all. This means that light can easily pass through the diamond and bounce back to the beholder's eye, producing a stunning, colorless appearance.

Many of the most famous diamonds throughout history have been Type IIa: the world's largest cut diamond – the Cullinan, the Koh-i-Noor and the Hope Diamond are, but few, examples.

Saleroom notices

Please note there will be no internet bidding on Lot 178

Additional information

News and stories

Bid now on these items