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Fall 2023 Auction Highlights
Large blue and pink diamonds were among the top lots of the fall auction season, including the most expensive auction jewel of 2023.
“Conch Shell” in Diamond
Metallic See-Through Backing on Omphacite Jade
New Väyrynenite Production from Nigeria
Large Faceted Pallasitic Peridot
The Effects of Heat Treatment on Zircon Inclusions in Madagascar Sapphires
Zircon inclusions in sapphires from Madagascar were studied to investigate the effects of heat treatment on their gemological and spectroscopic features.
Cultured Pearl Market Update
Abstracts; Spring 1994
This article, from the Spring 1994 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Afghan Emerald, Tajik Ruby, and Clarity-Enhanced Tourmaline
“Diffusion Ruby” Proves to be Synthetic Ruby Overgrowth on Natural Corundum
A relatively new production of red corundum, reportedly from Bangkok, has been offered for sale in recent years.
Investigations into Corundum and Beryl Color, Jade Artistry, the Chivor Emerald Mine’s History, and Swiss Rhodonite…
