Accurate Reporting of Key Trace Elements in Ruby and Sapphire Using Matrix-Matched Standards
Jennifer Stone-Sundberg, Timothy Thomas, Ziyin Sun, Yunbin Guan, Zachary Cole, Randy Equall, and John L. Emmett, January 26, 2018
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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A New Method for Detecting Be Diffusion-Treated Sapphires: Laser-Induced Breakdown Spectroscopy (LIBS)
Michael S. Krzemnicki, Henry A. Hänni,, December 1, 2004
This article describes the first application of laser-induced breakdown spectroscopy (LIBS) to gemmology.
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Introduction to Analysing Internal Growth Structures: Identification of the Negative d Plane in Natural Ruby
Christopher P. Smith, September 1, 1996
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
Henry A. Hänni, Karl Schmetzer, June 1, 1994
Greek manufacturer J. & A. Douros introduced a new flux synthetic ruby in early 1993.
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Gemstone Durability: Design to Display
Deborah Dupont Martin, June 1, 1987
A treatise on the design, display, care and repair of fine gemstones.
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A Preliminary Report on the New Lechleitner Synthetic Ruby and Synthetic Blue Sapphire
Robert E. Kane, March 1, 1985
A new synthetic ruby and synthetic blue sapphire have been synthesised by Johann Lechleitner of Innsbruck, Austria.
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Natural Rubies with Glass-Filled Cavities
Robert E. Kane, December 1, 1984
An examination and analysis of 15 natural rubies with glass-filled cavities.
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Induced Fingerprints
John I. Koivula, December 1, 1983
This article reports the results of a series of experiments conducted to explain the phenomenon of induced fingerprints.
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New Synthetic Rubies Made by Professor P. O. Knischka
E. J. Gübelin, September 1, 1982
A new synthetic ruby is discussed.
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Heat Treating Corundum: The Bangkok Operation
Jack S. D. Abraham, June 1, 1982
An overview of the potential effects that heat treatment can have on corundum.
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