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.
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.
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.
Introduction to Analysing Internal Growth Structures: Identification of the Negative d Plane in Natural Ruby
This article presents the methods and instruments needed to analyse the internal growth structures of corundum.
Synthetic Rubies by Douros: A New Challenge for Gemmologists
Greek manufacturer J. & A. Douros introduced a new flux synthetic ruby in early 1993.
New Synthetic Rubies Made by Professor P. O. Knischka
A new synthetic ruby is discussed.