GIA Announces a Tariff Work-Around: Overseas Labs Accepting Larger Diamonds for Grading
In response to logistics challenges related to recently announced tariffs affecting global shipments of gemstones, GIA (Gemological Institute of America) will temporarily expand services...
GIA Laboratory in Ramat Gan, Israel, to End Operations: Not Financially Sustainable
GIA Laboratory in Ramat Gan, Israel, to End Operations: Not Financially Sustainable
GIA Press Release
The GIA laboratory in Ramat Gan, Israel, will end operations by...
US$155,552,014! Auction Results Top Estimate, Even Before Day 2
$155,552,014! Auction Results Top Estimate, Even Before Day 2
Record Broken
The anticipated auction results of $150 million for the private collection of Heidi Horten, Christie's...
Country of Origin – 3 Countries for 1 Sapphire
Country of Origin - 3 Countries for 1 Sapphire
What does it mean when a sapphire receives 3 Country of Origin reports and each country...
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 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...
Details of Rio Tinto’s “Beyond Rare” Tender: Very Rare Lots: Argyle Pinks, Reds, &...
Details of Rio Tinto's "Beyond Rare" Tender: Very Rare Lots: Argyle Pinks, Reds, & Violets, plus Two Large and Important Diavik's - a Yellow...
IGI to Issue Grading Reports for Synthetic Moissanite: Charles & Colvard Adding Value to...
IGI to Issue Grading Reports for Synthetic Moissanite: Charles & Colvard Adding Value to "Lab Grown" Products
Gary RoskinRoskin Gem News Report
Charles & Colvard, the...
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...
GIA adds the AGS “Ideal Report.” Measuring Light Performance! What is an “ASET Map”?
GIA adds the AGS "Ideal Report." Measuring Light Performance! What is an "ASET Map"?
Gary Roskin - Roskin Gem News Report -
GIA and the...
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...
Interesting Reading: Grading Lab IGI Aims to Go Public on Dec. 20
Interesting Reading: Grading Lab IGI Aims to Go Public on Dec. 20
By Rob Bates - December 09, 2024 - JCK Online -
"International Gemological Institute...
