Research Article Search Results
A Quantitative Description of the Causes of Color in Corundum
Presents a quantitative means of determining the causes of color in a gem material, using corundum’s six major chromophores as an illustration.
“Electronic Device” in an Atypical Bead Cultured Pearl
GIA’s Hong Kong laboratory looks at a new radio-frequency identification (RFID) technology for tracking cultured pearls.
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.
History of the Chivor Emerald Mine, Part I (1880–1925): From Rediscovery to Early Production
Chronicles developments at the Chivor emerald mine in Colombia between 1880 and 1925, based on archival records.
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.
Diamond with Mobile Green Diamond Inclusion
Diamond inclusions are relatively common guests in diamond crystals.
GIA Researchers Evaluate ‘Light Performance’ and Diamond Cut
“Light performance” gets a lot of loose use in the diamond trade, but what does it mean when someone is actually looking at a diamond?
GIA Researchers Evaluate ‘Light Performance’ and Diamond Cut
“Light performance” gets a lot of loose use in the diamond trade, but what does it mean when someone is actually looking at a diamond?
A Look Back — and Forward — After 40 Years in the Gem and Jewelry Industry
Russell Shor reflects on the people, gems and stories he’s encountered as he’s covered the industry over the years.
Yellow Gemstones: Can You Identify Them?
Don’t judge a yellow gem by its color alone. A variety of gemstones also come in shades of yellow, from diamonds to citrine to garnets.
Not All That Glitters is Gold — Sometimes it is Mozambican Rubies
Learn about Mozambican rubies, including their mining history, characteristics and market demand.
Coronavirus May Cut Chinese Demand, Diamond Companies See Better Times
Economic impact of the coronavirus. Plus, an update on the diamond market and gold jewelry.
