Research Article Search Results
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.
New Emerald Production from Belmont
Activity at Brazil’s Belmont mine is updated at Tucson.
New Designs from Paula Crevoshay
World-renowned jewelry artist Paula Crevoshay displays some of her newest pieces at the Tucson gem shows.
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
Cultured Pearl Market Update
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.
The Role of Silicon in the Color of Gem Corundum
Considers the previously unreported but critical impact of silicon on the coloration of gem-quality sapphire.
Pinctada maculata (Pipi) Bead-Cultured Blister Pearls Attached to Their Shells
A study on four Pinctada maculata cultured blister pearls originating from Penrhyn Island.
