See Gem As
Tools
Research
Deep-Focus Earthquakes: The Heartbeat of a Diamond Factory?
The first installment of this column explores the potential role of modern-day deep-focus earthquakes on diamond growth.
The Type IIb De Beers Cullinan Blue Diamond
GIA’s New York laboratory reports on a 15.10 ct (17.47 × 11.53 × 7.94 mm) Fancy Vivid blue cut-cornered rectangular step cut named the De Beers Cullinan Blue diamond.
New Record Size for CVD Laboratory-Grown Diamond
GIA’s New York laboratory reports a new record size for CVD laboratory-grown diamond.
Measurement and Characterization of the Effects of Blue Fluorescence on Diamond Appearance
Using customized, image-based measurement systems to quantify the effect of fluorescence on the color, brightness, and transparency of gem diamonds viewed in both face-up and table-down orientations.
What Have Diamond Ages Taught Us?
Diamond ages offer insight into continent evolution spanning billions of years.
A History of European Royal Jewel Sales, Including Sotheby’s 2018 Auction of Marie Antoinette’s Jewels
Chronicles important auctions of jewels from European royal collections over the years, with a focus on a recent high-profile sale of items that once belonged to Marie Antoinette.
Separation of Natural from Laboratory-Grown Diamond Using Time-Gated Luminescence Imaging
Researchers from De Beers Group Technology present a technique that expands on the surface luminescence used in the DiamondView instrument to provide additional imaging information and quickly distinguish colorless or near-colorless natural diamond from laboratory-grown diamond.
Historical Reading List: Diamond and Carbonado from Brazil (Part 1)
Historical Reading List: Diamond and Carbonado from Brazil (Part 2)
Diamond with Mobile Green Diamond Inclusion
Diamond inclusions are relatively common guests in diamond crystals.
Pallasitic Peridot with Iridescent Needle-Like Inclusions
Numerous needle-like inclusions exhibit vibrant interference colors in a suite of pallasitic peridot from the Jepara meteorite.
Diamonds Are Not Forever! Diamond Dissolution
Violent kimberlite eruptions impact the surface features of diamonds, which can give scientists useful information about how diamonds react with the fluids in the mantle.
