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Gubelin gemstone ratings
Colored Gemstones Get New Ratings System
Switzerland’s Gübelin Gem Lab has launched a scoring system for colored gemstones based on wine ratings, claiming
News Nov 24, 2020 Rapaport News
Gubelin reference collections
Gübelin Taps Machine Learning for Gem Analysis
Gübelin Gem Lab has partnered with the Swiss Center for Electronics and Microtechnology (CSEM) to apply
News Sep 30, 2020 Rapaport News
Sotheby's
Pink and Blue Hearts Score Big for Sotheby’s
Two fancy-colored, heart-shaped diamonds led the Magnificent Jewels sale at Sotheby’s in Hong Kong, fetching a combined $18.7
News Jul 12, 2020 Rapaport News
Gemfields
Gemfields Debuts Traceable-Ruby Program
Gemfields auctioned 12 parcels of rubies backed by Gübelin Gem Lab’s Provenance Proof program, the first blockchain-enabled rubies
News Dec 17, 2019 Rapaport News
Everledger
Blockchain Group Everledger Gets $20M Funding
Chinese internet giant Tencent Holdings has led a $20 million investment in technology company Everledger, which provides
News Sep 24, 2019 Rapaport News
Rough diamond credit Shutterstock
Gübelin Testing Nano-Tracking for Diamonds
Gübelin Gem Lab is studying how it can place microscopic labels on diamonds to track them through the supply
News Feb 13, 2019 Joshua Freedman
LMHC padparadscha
Gem Group Clarifies Sapphire Color Requirement
Stones must have a stable color to qualify as padparadscha sapphires, according to a ruling by the Laboratory Manual Harmonisation Committee
News Dec 11, 2018 Rapaport News
Gemfields
Gemfields Unearths 5,655ct. Emerald
Gemfields has recovered a 5,655-carat emerald at its Kagem mine in Zambia, it said Monday. “The discovery of this exceptional
News Oct 31, 2018 Rapaport News
Gubelin nanoparticles
Gübelin Using Nanotech for Emerald Traceability
Gübelin Gem Lab has unveiled a radical solution for tracing the origin of emeralds, using nanotechnology to mark
News Mar 28, 2017 Rapaport News
Gübelin Gem Lab
Gübelin Lab Makes U.S. Presence Official
Gübelin Gem Lab has launched a permanent location in New York as part of a global expansion program that has
News Jan 22, 2017 Rapaport News
Diamonds
Gübelin Gem Lab Schedules Off-Premise Testing in New York
The Gübelin Gem Lab will offer off-premise gem testing in New York February 8 to 18, according to a statement
News Jan 27, 2016 Rapaport News
SSEF
Labs Agree on Criteria for ‘Pigeon Blood Red’ and ‘Royal Blue’ Terms
Switzerland’s colored-stone testing laboratories Gübelin Gem Lab and Swiss Gemmological Institute SSEF have agreed on standard
News Nov 05, 2015 Rapaport News
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