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...
Gems & Gemology
Gems & Gemology
SPRING 2023 - VOLUME 59, ISSUE 1
On a personal note, if nothing else, the images in this issue, especially in the Sapphire & Tucson...
GIA Live Online
GIA Live OnlineAdvanced Laboratory-Grown Diamonds
LIVE ONLINE | July 18-19, 2023, 8 AM- 4 PM PT | Cost $995 | This seminar builds on GIA's...
Fabergé launches special coronation lockets
Fabergé launches special coronation lockets
FashionNetwork.com
Fabergé unveils its latest capsule collection, a jewellery offer to celebrate the coronation of King Charles III that takes place...
SSEF: New Criteria to Detect Low-T Heated Pink Sapphires
New and additional criteria to detect low-T heated pink sapphires applied by SSEF
In the Swiss Gemmological Institute SSEF's newsletter last week, new and additional...
An Unusual Pearl: Coated or Not?
Roskin Gem News ReportGary Roskin
Conch Pearl: Coated, or not?
Identification of pearl coatings can be a bit tricky, especially if the coating has been performed...
GIA Alumni: Continuing Education
Learn from GIA's best. Continuing education sponsored by the GIA Alumni Collective
In Conversation with a Lapidary Historian
Lauriane Lognay sits down with Justin K. Prim
Tap here to read the full story at Jewellery Business Magazine.
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...
