Article Search Results

Show Filters
Showing 8 results for "*"
Colombian Emeralds
Classifying Emerald Clarity Enhancement at the GIA Gem Trade Laboratory

One of the greatest concerns with emerald filling is the degree of clarity enhancement such treatment represents

Read More

Multi-colored gems are superimposed on an image of glacier peaks.
Article
Gems and Minerals from the Subarctic

Circumnavigate the boreal reaches of the globe to explore gems from polar regions.

Read More

Emeralds from the Ural Mountains, USSR
Emeralds from the Ural Mountains, USSR

Emeralds are again being mined in the historic district of the Ural Mountains. Physical, chemical, spectroscopic, and microscopic characteristics of stones from the recent production are presented and compared with data on older samples as well as those reported in the literature.

Read More

The Lennix Synthetic Emerald

An examination of the gemological properties of a French flux fusion-grown synthetic emerald.

Read More

Gemstones of Pakistan: Emerald, Ruby, and Spinel

This article reports on three gem materials currently being mined in Pakistan.

Read More

The Chromium Content of Lechleitner Synthetic Emerald Overgrowth

The higher the chromium content in synthetic emerald overgrowth, the darker the coating and appearance of the stone will be.

Read More

Abstracts; Summer 1991

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

Read More

Article
Unveiling the Cat’s-Eye Effect in a 75 ct Colombian Emerald Pair

This article examines the mysteries of rough emerald cutting through a spectacular pair of cat's-eye emeralds from Colombia.

Read More