CIBJO Congress: Pearl Commission Recommends Bleaching be Disclosed
CIBJO Congress: Pearl Commission Recommends Bleaching be Disclosed
Reports from the 2024 CIBJO Congress, held in Shanghai from November 2 through 4
BleachingWhile CIBJO has long...
GAHK: the Journal of the Gemmological Association of Hong Kong 2024 – the 45th...
GAHK: the Journal of the Gemmological Association of Hong Kong 2024 - the 45th Anniversary Copy!
The 45th anniversary of the GAHK Journal is now...
On Earth: Superman’s Kryptonite, or is it just Fluorescing? Is Kryptonite real?
On Earth: Superman’s Kryptonite, or is it just Fluorescing? Is Kryptonite real?
Science News ExploresAaron Tremper
Kryptonite's out-of-this-world glow is fiction, but Ultra Violet light can give...
Deceptive Diamond Fluorescence: “Nothing is Always What it Appears”
Deceptive Diamond Fluorescence: "Nothing is Always What it Appears"
Bear Williams, laboratory directorStone Group Labs
What If?Consider yourselves on notice - If you are using Long...
Happy Anniversary: GIA’s Gems & Gemology Summer Issue – G&G at 90!
Happy Anniversary: Summer Reading: GIA's Gems & Gemology Summer Issue - G&G at 90!
It is Gems & Gemology’s (G&G) 90th year, and the Summer...
Inside Facette: Low Heat, New Lightbox, and so much more!
Inside Facette: Low Heat, New Lightbox, and so much more!
Gary Roskin - Roskin Gem News Report -
Leading the Swiss Gemmological Institute SSEF's 2024...
SSEF: Facette Magazine May 2024 – An Outstanding Gemmological Issue
SSEF: Facette Magazine May 2024 - An Outstanding Gemmological Issue
Gary Roskin - Roskin Gem News Report -
We have another gemmological journal...
GEMMES: Spring 2024
GEMMES: Spring 2024
In this issue, you will find the contributions of Stéphane Renard, Thomas Cagniard, Féodor Blumentritt, Aurélien Delaunay, Franck Notari, Ingrid Lerouyer, Boris...
2022 CGA Gem Conference
2022 CGA Gem Conference, October 21-23 – Vancouver, BC
Over the next several weeks, the Roskin Gem News will feature the guest speakers who presented...
Zimbabwe School of Mines Introduces Gemstone Cutting
Zimbabwe School of Mines Introduces Gemstone Cutting
The Zimbabwe school of mines (ZSM) seeks to explore opportunities to introduce programs in emerging areas such as...
Seminar: The Origin of Color of Fancy Color Diamonds
Seminar: The Origin of Color of Fancy Color Diamonds
Wednesday, September 6, 11am
After a successful first seminar on the topic of synthetic diamonds back...
Chromium Surface Diffusion: a Trade Alert
Chromium Surface Diffusion: a Trade Alert
Chromium Surface Diffusion Treated “Ruby”By: Jeffery Bergman - ASG SGC of EighthDimensionGemsPhotos by Ayub Muhammad of Pretty Little GemJuly...
