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Recent Advances in Understanding the Geology of Diamonds
Examines the last two decades’ advances in analyzing and understanding the formation of natural diamonds, and their relation to the earth’s formation.
80 Years of Gems & Gemology
Over these eight decades, G&G has been a critical resource for the gem and jewelry industry. Groundbreaking articles on diamond grading appeared as early as the 1940s. Through the Lab Notes section, GIA gemologists reported on the latest treatments and synthetics, which helped to protect the trade and the public.
Landmark Articles from Gems & Gemology
For eight decades, Gems & Gemology, GIA’s peer-reviewed quarterly journal, has educated generations of readers and protected the gem-buying public. We share ten landmark articles that were particularly significant to gem and jewelry professionals.
Botswana’s Scintillating Moment
Examines the history of diamond production in Botswana and the long-term outlook for beneficiation through value-added industries.
Long-Term Durability of CVD Synthetic Film on Diamond
A natural diamond with a CVD synthetic film is examined at GIA's Carlsbad lab.
Yellow CVD Synthetic Diamond
A Fancy yellow type Ib CVD-grown synthetic diamond undergoes testing at the New York lab.
Susan Jacques’ Top 20 Traits to be Successful in Retail
Susan Jacques spent more than 30 years in retail before becoming president and CEO of GIA in January, 2014. She offered these traits for success during a panel discussion at GIA’s mini Jewelry Career Fair held on June 6, 2010 in Las Vegas.
Color-Change Garnet in Diamond
The Indian Gemological Institute’s Gem Testing Laboratory recently examined a 0.30 ct colorless round brilliant-cut diamond containing an interesting inclusion.
CVD Synthetic Diamond with Unusual Inclusions
Examination of a CVD synthetic diamond with an unusual pattern of growth dislocations that resemble natural inclusions.
Diamond Cut: Anatomy of a Round Brilliant
Jewelers and gemologists use a specific set of terms to describe parts of a polished diamond. Certain measurements of the shape or proportions ultimately have an affect on the round brilliant diamond’s cut grade.
Screening of Small Yellow Diamond Melee for Treatment and Synthetics
Melee diamonds can be efficiently screened for synthesis and treatment using infrared absorption spectroscopy, DiamondView imaging, and microscopy.
Mixed-Type HPHT Synthetic Diamond with Unusual Growth Features
Although this stone bore some superficial resemblance to moissanite, its gemological properties were consistent with HPHT synthetic diamond.
