Pre-Auction Analysis: New York, April 16th 2019, Christies Magnificent Jewels and April 17th 2019, Sotheby’s Magnificent Jewels

Our Pre-Auction Analysis focuses on elements that are hidden from the unprofessional eye. As always, we will describe the important visual elements for those who cannot attend the preview. We will discuss characteristics such as Undertone, Color Dispersion, and Inner-Grade (UDI; a detailed explanation appears at the bottom of this article). When we analyse and grade any fancy color diamond it is always done in relation to its GIA description.

We use grades 1, 2, 3, and 4, 1 being the lowest grade. Grade + is granted in rare cases and stands for stones with an exceptional characteristic. Stones that receive a minimum total UDI score of 8, without a red remark, are considered to be “Gems” and are generally sought after by high-end jewelry, collectors and the investment community.

For your convenience, we have added direct links for the GIA reports

• All images in this article review were taken with an iPhone 10, no filters were applied.
• All auction valuations are per carat and in US Dollars.

Christies, New York Magnificent Jewels, 16 April 2019

Lot #276

3.06  carat Fancy Vivid Blue Pear modified brilliant-cut,VS2

2.61  carat Fancy Vivid Blue Pear modified brilliant-cut,VS2

High catalog estimation: $1,410,934 per carat

Price Realized: $1,189,506  per carat

Click to view GIA Report: 11993126

Click to view GIA Report: 11890077

Two Vivid Blue pear shapes with similar length and width but different outline, both with high depth percentage (81.9% and 73%). The stones look smaller relative to their weight and their ratio of 1.4, wich creates an unconventional look all together.