Article Search Results

Show Filters
Showing 9 results for "*"
Eight HPHT faceted synthetic diamonds from AOTC Group
Near-Colourless HPHT Synthetic Diamonds from AOTC Group

Presents the gemmological and spectroscopic properties of a suite of synthetic diamonds grown by AOTC using high pressure and high temperature.

Read More

The Separation of Natural from Synthetic Colourless Sapphire

Greater amounts of colourless sapphire—promoted primarily as diamond substitutes, but also as natural gemstones—have been seen in the gem market during the past decade.

Read More

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.

Read More

Tairus Hydrothermal Synthetic Sapphires Doped with Nickel and Chromium

Researchers from the Tairus joint venture have developed the technology for the hydrothermal growth of gem-quality crystals of synthetic sapphire.

Read More

“Ti-Sapphire”: Czochralski-Pulled Synthetic Pink Sapphire from Union Carbide

One of the most interesting of the commercially available Czochralski pulled synthetic corundums is pink “Ti-sapphire.”

Read More

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.

Read More

Induced Fingerprints

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

Read More

The Gemmological Properties of Chatham Flux-Grown Synthetic Orange Sapphire and Synthetic Blue Sapphire

The author examines the gemmological properties of Chatham flux-grown synthetic orange sapphires and blue sapphires.

Read More

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.

Read More