Article Search Results

Show Filters
Showing 10 results for "*"
Faceted Cobalt-Diffused Spinel and Polished Plate Samples
Article
GIA Lab Reports on a New Cobalt Diffusion Treatment of Natural Spinel

Report on a new cobalt diffusion treatment of natural spinel, using analysis of inclusions, UV-Vis-NIR and EDXRF spectroscopy, and LA-ICP-MS.

Read More

Article
Spring 2015 G&G Examines Blue Spinel, Chinese Jewellery Design and the Latest in Synthetics

G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.

Read More

Abstracts; Summer 1991

From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.

Read More

Dark pink-purple spinel
Spinel Inclusion in Spinel

Examination of a pink-purple spinel revealed what appeared to be a spinel crystal inclusion.

Read More

'Cobalt-Blue' Gem Spinels
'Cobalt-Blue' Gem Spinels

Similarities between natural spinels - with intense blue colour - and synthetic material, have led to difficulties in the recognition of the natural stones by traditional methods.

Read More

The Elahera Gem Field in Central Sri Lanka

The Elahera gem field currently provides approximately 35% of the gemstones exported from Sri Lanka.

Read More

Abstracts; Autumn 1991

This article, from the Autumn 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.

Read More

A Status Report on Gemstones from Afghanistan

An overview of the plentiful and various gem materials being discovered and produced in Afghanistan.

Read More

Spinel submitted as diamond

It is a rare occurrence when a diamond simulant submitted to a GIA laboratory turns out to be a natural gemstone.

Read More

Article
Spinel submitted as diamond

It is a rare occurrence when a diamond simulant submitted to a GIA laboratory turns out to be a natural gemstone.

Read More