Accurate Reporting of Key Trace Elements in Ruby and Sapphire Using Matrix-Matched Standards
Presents a group of corundum standards developed by GIA to improve the accuracy and efficiency of its laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) instruments.
Abstracts; Summer 2009
This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Sapphires from Australia
An overview of Australia's recent significance in the production of blue sapphire.
Gemstone Durability: Design to Display
A treatise on the design, display, care and repair of fine gemstones.
Heat Treating Corundum: The Bangkok Operation
An overview of the potential effects that heat treatment can have on corundum.
Heat Treating Ruby and Sapphire: Technical Aspects
A review of heat treatment methods available for use on natural or synthetic corundum.
This article reports the results of a series of experiments conducted to explain the phenomenon of induced fingerprints.
Diagnostic Features and Heat Treatment of Kashmir Sapphires
Today, only by combining different gemmological tests with years of practical experience, can a conclusive determination of the origin of a sapphire be made.
The Sapphires of Mingxi, Fujian Province, China
Blue sapphires from China are similar to gem corundum from Australia, Thailand, and Kampuchea (Camodia).
A Preliminary Report on the New Lechleitner Synthetic Ruby and Synthetic Blue Sapphire
A new synthetic ruby and synthetic blue sapphire have been synthesised by Johann Lechleitner of Innsbruck, Austria.