Inclusions in Natural, Synthetic and Treated Ruby
Provides a visual guide to the internal features of natural, synthetic and treated rubies.
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.
Flux-Induced Fingerprint Patterns in Synthetic Ruby: An Update
Some manufacturers are known to have treated Verneuil flame-fusion synthetic rubies by immersion in a flux melt to induce patterns like the “fingerprints” seen in some natural rubies.
The Ramaura Synthetic Ruby
A report on the new synthetic ruby trade-named Ramaura.
This article reports the results of a series of experiments conducted to explain the phenomenon of induced fingerprints.
Some Diagnostic Features of Russian Hydrothermal Synthetic Rubies and Sapphires
Most Russian hydrothermal synthetic rubies and pink, orange, green, blue and violet sapphires—coloured by chromium and/or nickel—reveal diagnostic zigzag or mosaic-like growth structures associated with colour zoning.
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.
A Gemmological Look at Kyocera's New Synthetic Star Ruby
Kyocera Corporation of Kyoto, Japan, is currently marketing under the trade name "Inamori" a macroscopically natural-appearing semitransparent asteriated synthetic ruby.
“Diffusion Ruby” Proves to be Synthetic Ruby Overgrowth on Natural Corundum
A relatively new production of red corundum, reportedly from Bangkok, has been offered for sale in recent years.
Hydrothermal Synthetic Red Beryl from the Institute of Crystallography, Moscow
Hydrothermal synthetic red beryl has been produced for jewellery applications.