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...
Ti Surface Diffusion: Just when you thought it was an easy identification
New research shows that the titanium surface diffusion treatment is being polished off the facets, but left inside cavities and fractures. Stone Group...
A Wearable ET Pallasitic “Death Star”
by Charles Michael Designs
Charles is an extraordinary jeweler, and of course, on our "radar" since he has a talent for bringing out the best...
Lizzadro: Celebrating 60 years!
New Exhibit Celebrates the Lizzadro Museum’s 60th Anniversary “On The Cutting Edge - Contemporary Gemstone Sculpture”By Helen Serras-Herman
A fabulous exhibit titled “On the Cutting...
Will Singapore be the new Hong Kong? All signs say No.
Gary RoskinRoskin Gem News Report
Will Hong Kong ever recover from past Covid restrictions and political turmoil? Businesses have flocked elsewhere.
"All roads lead to JGW...
A Personal Flight: Peridot from Space
by Rick StinsonThe “New” 4 Billion-Year-Old Gem
Peridot From A Pallasite Meteorite
Pallasite meteorites have been known since the German naturalist Peter Pallas (1741–1811), who studied in...
Fluorescence that proves Natural
Stone Group LaboratoriesCara & Bear Williams
Findings from Stone Group Laboratories shows the blue/white fluorescence in diamond can only be natural in origin.
Many gemstones...
Small Stone, Small World
A chance encounter with the great great great great grand daughter ....
"It looks completely unbelievable," says Nicolas Zylberman, gemologist, gemological historian, and recent exhibitor...
Tucson Treasure
It was my first trip to the Tucson gems and minerals shows. Like many who venture into Tucson the first week of February, it...
