Green Jadeite-Omphacite from Guatemala
Burmese Jade: The Inscrutable Gem
Color Modification of Spinel by Nickel Diffusion: A New Treatment
Reports on a newly discovered treatment process for producing a deep blue color in natural spinel and proposes identification criteria.
Sixth Annual Gianmaria Buccellati Foundation Award Winner
A graduate of GIA’s Jewelry Design program in London is the recipient of the 2022 Gianmaria Buccellati Foundation Award.
Gems & Gemology Turns 90!
Low-Temperature Heat Treatment of Pink Sapphires from Ilakaka, Madagascar
Studies the effects of low-temperature heat treatment on inclusions in this gem material, as well as the use of FTIR spectroscopy to detect the treatment.
An Investigation of a Suite of Black Diamond Jewelry
International Jewelry Tokyo 2024
“Fishbone” Inclusion in a Burmese Peridot from Mogok
Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Governador Valadares District
Fine Gems and Update from Myanmar
“Star of David” Spinel Twin Crystal with Multiphase Inclusions from Mogok
A rare spinel, featuring a Star of David pattern and multiphase inclusions, is examined in Bangkok.