Pre-Auction Analysis: September 13th, 2022, Sotheby’s New York – Important Jewels

By FCRF Team | 12.09.22
Pre-Auction Analysis: September 13th, 2022, Sotheby’s New York – Important Jewels

Sotheby’s New York , Important Jewels – September 13th, 2022

Our Sotheby’s New York Pre-Auction Analysis focuses on elements that are not always visible to the untrained eye. We discuss characteristics such as Inner-Grade, Color Dispersion, and Undertone – collectively termed IDU. Professionals use the IDU method intuitively when analyzing a Fancy Color Diamond. The acronym we use makes these elements easier to remember. 

Members who read this analysis should see it as a valuable supplement to the GIA report. A detailed explanation of the FCRF’s grading methodology can be found at the end of this article. We recommend reviewing it closely to broaden one’s professional vocabulary for describing fancy color diamonds to clients.  

Please note that we analyze and grade diamonds under LED lights and relative to their grade on the GIA report.

The Grades
We use grades 1, 2, 3, and 4, with 1 being the lowest grade. Grade “4+” is granted in rare cases and denotes stones with exceptional characteristics. Stones that receive a minimum total IDU score of 9 without a red remark pass the industry premium threshold and can be traded easily. Fancy Color Diamonds that are graded 10 or above (without a quality remark) are usually sought after by high-end jewelers and collectors.

For your convenience, we have added direct links to diamonds’ GIA reports and FCRF rarity stats.

  • All images in this analysis were taken with an iPhone 13 Pro; no filters were applied.
  • All auction valuations are per-carat and listed in US Dollars.
Disclaimer
This analysis reflects the opinions of the FCRF professional team. It does not constitute a recommendation to buy or not buy a particular diamond. Buyers assume the responsibility of verifying any information with the auction house. At times, mistakes can happen in the visual analysis and report placement. Therefore, one should not rely solely on this analysis for buying purposes.
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Lot: 67

Description: 12.84 ct, Fancy Yellow, Cushion, SI1
High Auction Estimation: $9345 pc

Price Realized: $14,709 pc

Rarity: A small number of similar diamonds enter the market yearly… Check Rarity Here 
GIA Report: View


 

Analysis:
A large Fancy Yellow Cushion-cut diamond with pointed corners.  The stone’s face-up area appears much

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