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

This pre-auction analysis will focus on visual elements and other observations that are not expressed on the GIA report nor in the catalog processing the images. Our analysis expresses characteristics such as Undertone, Color Dispersion, and Inner-Grade (UDI). We use grades 1, 2, 3, and 4 (1 standing for the lowest grade). The grade 4+ is quite rare and stands for an exceptional characteristic. Stones that are above the SI2 clarity grade and with a total UDI quality score of 8 or above are considered to be gems and are probably suitable for high-end jewelry, collectors, and the investment community.

All images in this review were taken with an iPhone 7.

All auction valuations are per carat and in US Dollars.

Important note: We strongly recommend downloading the beta version of the new FCRF app and using the auction calculator. This app lets you calculate your bidding price (per carat), including the house commission, as you follow the lot.

Lot # 1673

2.03 carat fancy vivid purplish pink Kite step cut, I2

High catalog estimation: $1,220,000 per carat
Price Realized: $500,000 per carat

Any 2-carat pink in the vivid category is considered rare and in-demand. However, this diamond has two caveats that should be taken into account. The first one would be the I2 clarity grade. In addition, the indented natural on the table is visible to the naked eye, which for some reason cannot be seen on the catalog. The second caveat