See Gem As
Tools
Research
A Visit to Clarity Diamond’s CVD Facility
An in-depth look at Clarity Diamond’s CVD facility in Austin, Texas.
Multilayered Laboratory-Grown Diamond
A laboratory-grown diamond with multiple growth layers highlights the challenges of discerning the details of diamond synthesis.
“Conch Shell” in Diamond
A transparent feather observed in a natural diamond resembles a conch shell.
Cutting Diffraction Gratings to Improve Dispersion (“Fire”) in Diamonds
A new microlithography process developed to create high-resolution diffraction grating patterns on portions of certain facets can improve the dispersion of light and thus the amount of “fire” in a diamond.
Winter 2011 G&G Lab Notes
This section, from the Winter 2011 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
D-Color Natural IIa Diamond with Walstromite Inclusion
A diamond is proven to have a superdeep origin through an inclusion of CaSiO3-walstromite.
An Era of Sweeping Change in Diamond and Colored Stone Production Markets
The diamond, colored stone, and pearl businesses have witnessed unprecedented change since the turn of the 21st century.
Diamond Within a Diamond Within a Diamond
A natural diamond contains two inclusions resembling a faceted diamond and a rough diamond.
Diamond History and Lore
Diamond Care and Cleaning Guide
Learn about diamond's durability and how to care for your diamond jewelry.
