- Oct 7, 2004
At the PS Carlsbad GTG last year, GIA showed pictures of this some bigger lab blue emerald cut they graded. I can't remember exact ct, but they were over 5ct? 10ct? They didn't disclose the price, but it sounded pretty expensive still. I'd love to buy a giant one for cheap!
ETA: found them! https://www.gia.edu/gia-news-research/large-blue-and-colorless-hpht-synthetic-diamonds
Summarizes statistical data and distinctive features of several thousand gem-quality HPHT synthetic diamonds examined by GIA from 2007 through 2016.