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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.
“Rainbow Lattice” from Australia
One of the most striking materials encountered in the Riverpark Inn (Pueblo) Gem Show was “rainbow lattice.”
