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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.

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Abstract Header from the 2009 issue of Gems & Gemology
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.

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Gemstone Durability: Design to Display

A treatise on the design, display, care and repair of fine gemstones.

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Heat Treating Corundum: The Bangkok Operation

An overview of the potential effects that heat treatment can have on corundum.

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Heat Treating Ruby and Sapphire: Technical Aspects

A review of heat treatment methods available for use on natural or synthetic corundum.

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Induced Fingerprints

This article reports the results of a series of experiments conducted to explain the phenomenon of induced fingerprints.

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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.

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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.

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Synthetic Rubies by Douros: A New Challenge for Gemmologists

Greek manufacturer J. & A. Douros introduced a new flux synthetic ruby in early 1993.

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New Synthetic Rubies Made by Professor P. O. Knischka

A new synthetic ruby is discussed.

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