Pre-Auction Impressions: April 20th 2016, Christie’s New York

By Tracey Greenstein | 18.04.16
Pre-Auction Impressions: April 20th 2016, Christie’s New York

On Tuesday, April 19th, Christie’s will feature a selection of fancy color diamonds.

Our pre-auction analyses focus on visual elements that are not expressed on the GIA report, such as “inner-grade”, “undertone” and “color dispersion”. We use grades 1, 2, 3, 4 and 4+ to evaluate these features. It is often difficult to identify ...

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