Single HPHT Synthetic Diamond Mixed in Natural Diamond Ring
Single HPHT laboratory-grown diamond identified in a ring containing 194 natural diamonds.
Synthetic Moissanite Coated with Diamond Film Imitating Rough Diamond
A rough sample submitted as diamond is proven to be a synthetic moissanite with a thin diamond coating.
Emeralds Filled with Epoxy Resin: DiamondView Observations
“Blue flashes” seen with the DiamondView help to analyze the quantity and variety of emerald-filling substances.
GSA 2018 Report
Presenters reported on a broad range of research topics at the annual meeting of the Geological Society of America in Indianapolis.
Prismatic Rutile in Quartz
A rock crystal quartz displayed a large, well-formed rutile crystal inclusion under the table.
Second World Emerald Symposium
Important topics such as sustainability, blockchain, nanotechnology, and traceability were discussed at the second World Emerald Symposium held in Bogotá.
Winter 2018 G&G Publication Information
This document provides the publication information for Gems & Gemology
Exhibition Review: Ornamental Traditions: Jewelry from Bukhara
Review of Ornamental Traditions: Jewelry from Bukhara at the Art Institute of Chicago.
Crowningshieldite: A New Mineral
A newly discovered mineral, crowningshieldite, was accepted on September 18, 2018, by the International Mineralogical Association.
Meeting of the International Mineralogical Association
Researchers gathered at the 22nd meeting of the International Mineralogical Association (IMA) to discuss several colored stone topics ranging from treatments to the latest advancements in understanding gem minerals.
An Irradiated CVD Synthetic Melee Diamond Found in Irradiated Natural Melee Diamonds
Single irradiated CVD synthetic was identified in a parcel of irradiated natural melee diamonds in the Tokyo lab.
Manufactured Gold-in-Quartz Jewelry
Manufactured gold-in-quartz jewelry was examined in the Carlsbad lab.
Natural Diamond Mistaken as HPHT Synthetic
Declared synthetic diamond identified as natural in the Carlsbad lab.
Drill Hole in Heated Pink Sapphire
An unexpected manmade feature is found in a pink sapphire from Myanmar.
Lepidocrocite in Boulder Opal
A boulder opal contained an unusual carpet of needle-like lepidocrocite inclusions along the interface between the opal and the ironstone matrix.
Guizhou Jade from Qinglong, China
The authors collect Guizhou Jade at the mine and explore the antimony deposit in Qinglong, China.
Natural Emerald with Inclusions Along Three Directions
Guild Gem Laboratories examines a 10.48 ct sugarloaf emerald for identification and origin determination.