Article Search Results

Types

Articles (7)

Content Type

Lab Notes (1) Gem News International (1) Abstract (3)

Reviewed

Peer Reviewed (2)

Topics

See All Topics

Gemstones

See All Gemstones

XClear Selections

Synthetic Sapphire and Synthetic Spinel Doublets

Najmeh Anjomani, January 27, 2017

Unusual doublets created from two different synthetics are revealed at the Carlsbad laboratory.

Verneuil-grown synthetic spinel with unusual short-wave UV reaction

Unusual Short-Wave UV Reaction in Synthetic Blue Spinel

Pragati Verma, January 30, 2015

A blue synthetic spinel grown by the Verneuil process displayed the short-wave UV reaction of a flux-grown sample.

Flux-Grown Synthetic Red and Blue Spinels from Russia

Sam Muhlmeister, John I. Koivula, June 1, 1993

Examination of red and blue samples of a relatively new flux synthetic spinel from Russia established criteria by which they can be separated from their natural counterparts.

'Cobalt-Blue' Gem Spinels

James E. Shigley and Carol M. Stockton, March 1, 1984

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.

Abstracts; Summer 1991

Dona M. Dirlam

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

Abstracts; Winter 1991

Dona M. Dirlam

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

Abstracts; Autumn 1991

Dona M. Dirlam

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.

Article Search Results

Types

Content Type

Reviewed

Topics

Topics

Gemstones

Gemstones

Find a Retailer

Visit the campus shop

Subscribe to Knowledge Rocks Emails

G&G Winter 2019 Edition