From the Gem & Mineral Vault
Rhodochrosite
from Peru
on view at the Harvard Mineralogical & Geological Museum (MGM), Cambridge, Massachusetts, across the Charles River from Boston.
Photo by Gary Roskin
AGA Conference & Gala
Accredited Gemologists Association
2023 AGA Tucson Conference
Register to join us Wednesday, February 01, 2023
Conference features include a stellar lineup of six gemological education presentations and...
What is a “Circular Brilliant”?
The Palm Tree BroochChristie's Auction, Dec. 6
Gary Roskin -Roskin Gem News Report -December 07, 2022 -
The Palm Tree Brooch, a Cartier estate piece, was...
Dr. Jeffrey Post: Minerals Talk Live
Mineral Talks LIVE: Wednesday December 7, 2022
Do you want a more personal, in-depth connection with some of the most fascinating people in the mineral...
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
Sithole opens a Gemmological laboratory and Lapidary Center in Afghanistan
Tap here to read the feature story in the Herald
https://www.herald.co.zw/sithole-opens-a-gemmological-laboratory-and-lapidary-center-in-afghanistan/
Danat launches smartphone app for pearl and gemstone examination results
November 29, 2022
BAHRAIN
Manama, Bahrain – The Bahrain Institute for Pearls and Gemstones (Danat) has launched a new mobile application that enables customers to view...
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.
Making an Impression: The Art and Craft of Ancient Engraved Gemstones
Virtual Exhibition Tour Available here belowEmory University, Michael C. Carlos MuseumAtlanta, Georgia, USA
According to Emery University, “Making an Impression: The Art and Craft of...
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...
