A Diamond of Rare Purity

On 23 April 2021, by Claire Papon

This exceptional 14-carat stone without the slightest defect will dazzle enthusiasts.

Platinum ring set with a navette-cut diamond, weight of diamond: 14.49 ct.
Estimate: €200,000/220,000

For the moment, Covid-19 has deprived us of an exhibition in the Gallery of Evolution at the Muséum d’Histoire Naturelle, Paris, entitled "Gems, Precious Stones", it stages, in partnership with Van Cleef & Arpels, the marvelous symbiosis between science and art. We can only hope that it will open soon and be extended beyond the June 14 closing date. In this sale, we can delight in a semi-rigid gold necklace by the famous jeweler, consisting of a row of shamrocks, each set with a brilliant-cut diamond, and expected to fetch around €20,000, and covet the remarkably fine stone—a true queen of gems: a D color diamond with SI1 clarity.

Expert Vincent Forge says: "This chemically pure diamond, with no nitrogen impurities detectable by infrared spectrometry, is a type IIa stone. This type is extremely rare in nature, and represents only 1% of the diamonds mined throughout the world."

Formed deep in the earth, this stone is mainly composed of carbon atoms, where a few elements like nitrogen and boron can replace a carbon atom. Type II diamonds fall into two categories: IIa and IIb. Type IIa diamonds contain no measurable amount of nitrogen or boron, and are called "pure" diamonds. A perfect cut then provides them with all the brilliance for which this extraordinary gem is famous.

Thursday 29 April 2021 - 11:00 - Live
Salle 15 - Hôtel Drouot - 9, rue Drouot - 75009
Christophe Joron Derem
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