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Auction Analysis

Pre-Auction Analysis: Geneva, November 14th 2017 Christie’s and November 15th 2017, Sotheby’s

A fancy intense pink old mine pear shape cut with a very noticeable black inclusion underneath the crown and a penetrating feather from the girdle inside (hidden under one of the gold prongs).

Pre-Auction Analysis: October 3rd 2017, Sotheby’s Hong-Kong

This pre-auction analysis will focus on visual elements that are not expressed on the GIA report, as well as other general observations.

Pre-Auction Analysis: May 2017, Christie’s Hong-Kong

This pre-auction analysis will focus on visual elements that are not expressed on the GIA report, as well as other general observations that won’t appear in

Pre-Auction Analysis: May 2017, Sotheby’s and Christie’s Geneva

This Sotheby’s and Christie’s Geneva pre-auction analysis has a relatively large amount of blue fancy color diamonds.

Pre-Auction Analysis: April 2017, Sotheby’s Hong-Kong

This Sotheby’s Hong Kong pre-auction analysis focuses on visual elements that are not expressed on the GIA report, such as Undertone, Color Dispersion, and Inner-Grade (UDI). We use grades such as 1, 2, 3, and 4 to describe these features. The grade 4+ is used in special cases to describe unusual visual characteristics.

Pre-Auction Analysis: November 2016, Christie’s Hong Kong

This large Vivid Yellow Emerald cut was manufactured like a colorless diamond. Hence, we assume that it was not manufactured in the last two or three decades.

Pre-Auction Analysis: Christie’s and Sotheby’s Fancy Color Diamond Lots

According to our Rarity Evaluator, a stone with these gemological characteristics comes to the market once every few years and receives the “one of a kind” grade

Pre-Auction Analysis: 2016, Sotheby’s Hong Kong

According to our Rarity Evaluator this rare diamond receives a “One of-a-kind” grade. New pink (or purple pink) diamonds in the intense grade above 5 carat come into the market once every few years. Internally flawless pink diamonds represent 7% of all pink diamonds

Pre-Auction Analysis: Christie’s Hong Kong 2016

This 5.03 carat Fancy Vivid Green diamond is one of the largest Vivid Green diamonds seen at auction in recent years. Though the GIA generally employs softer grading criteria when determining a stone’s intensity level, this Vivid Green diamond exhibits a relatively high inner grade (grade 3).

Post-Auction Impressions: Sotheby’s Hong Kong

Noticeable discrepancies between live and in person auction house diamonds can create a bit of controversy. When a customer buys a high quality, fairly priced stone in retail and later sees what appears to be a comparable stone in an auction catalogue for a significantly lower price, it disappoints the owner.

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