Research Article Search Results
Negative Crystals in Sapphires
Sapphires from Baw Mar host multiphase inclusions in appealing patterns.
Magnificent Sapphires from Montana’s Rock Creek Mine
A look at the 2016 sapphire production from Montana’s Rock Creek deposit.
New Designs from Paula Crevoshay
World-renowned jewelry artist Paula Crevoshay displays some of her newest pieces at the Tucson gem shows.
A New Discovery of Emeralds from Ethiopia
A report on a new Ethiopian source of high-quality emerald.
Tourmaline and Sapphire from Nigeria
An update on Nigerian colored stone production is obtained at the Tucson gem shows.
Pink Sapphire Filled with Bismuth-Based Glass
A sapphire with a color not commonly seen in the lab is found to have a glass filling.
Multi-Elemental Diffused and Melt-Grown Synthetic Sapphire
GIA examines a multi-elemental diffused and melt-grown synthetic sapphire for the first time.
Ethical and Sustainable Vertical Integration in the Sapphire Market
The recession of 2008 transforms a gem business into a vertically integrated operation.
Emerald Dealing in Afghanistan
An experienced gem dealer gives an overview of sourcing gem-quality Afghan emeralds.
