Research

Recent Findings

CVD overgrowth on natural diamond
Synthetics

A Synthetic Diamond Overgrowth on a Natural Diamond

Kyaw Soe Moe, Paul Johnson, Ulrika D’Haenens-Johansson and Wuyi Wang , May 1, 2017

Analysis of a diamond graded Fancy blue revealed a CVD synthetic overgrowth on natural diamond.

Read More
5.19 ct CVD synthetic diamond
Synthetics

CVD Synthetic Diamond Over 5 Carats Identified by GIA

Billie “Pui Lai” Law and Wuyi Wang , January 27, 2017

Results from GIA’s recent testing of a 5.19 ct CVD synthetic diamond, the largest it has examined to date.

Read More
10.08 ct HPHT synthetic diamond with color equivalent to Fancy Deep blue
Synthetics

Blue HPHT Synthetic Diamond Over 10 Carats

Terry Poon and Wuyi Wang , January 27, 2017

Results from GIA’s recent testing of a 10.08 ct blue HPHT synthetic diamond, the largest HPHT synthetic recorded to date.

Read More

Research Events

No Upcoming Research Events.
View All Events

Other Publications

Large, Rare Diamonds Reveal the Inner Workings of Earth’s Mantle

Read Article
Double-sided Plate Laser Cut from Alluvial Diamond

Diamond Growth from C–H–N–O Recycled Fluids in the Lithosphere: Evidence from CH4 Micro-inclusions and δ13C–δ15N–N Content in Marange Mixed-habit Diamonds

Read Article
View More

Ongoing Research

Four Pinctada maculata bead-cultured blister pearls

Pinctada maculata (Pipi) Bead-Cultured Blister Pearls Attached to Their Shells

Read Article
Rough and cut sapphires

A Study of Sapphire from Chanthaburi, Thailand and its Gemological Characteristics

Read Article
Blue Sapphires

An In-Depth Gemological Study of Blue Sapphires from the Baw Mar Mine (Mogok, Myanmar)

Read Article
Sapphire

Sapphires from the Gem Rush Bemainty area, Ambatondrazaka (Madagascar)

Read Article
View All

You Might Also Like

Resources For Retailers
Find a Retailer
learn more
Shop the Campus Store
Learn More
Quality Assurance Benchmarks
Learn More
Gems & Gemology
G&G Spring 2017 Edition
Learn more