Article Search Results

Show Filters
Showing 32 results for "*"


Articles (32)

Content Type


XClear Selections
The Wittelsbach Blue

This article describes what is known about the Wittelsbach Blue since it was first reported in 1666, and the gemmological information released to date on this diamond.

Read More

Hydrogen-rich Diamonds
Grey-To-Blue-To-Violet Hydrogen-Rich Diamonds from the Argyle Mine, Australia

The Argyle diamond mine is the only known source of type IaB hydrogen- and nitrogen-rich diamonds coloured grey to blue to violet.

Read More

Pink Diamonds from Australia

The author reports on a sudden influx of natural fancy pink diamonds and their origins.

Read More

0.45 ct Pink CVD Labgrown Diamond
Strongly Coloured Pink CVD Lab-Grown Diamonds

Pink CVD lab-grown products can be separated from natural and treated-colour natural pink diamonds by a combination of gemmological and spectroscopic properties, which are explored in this study.

Read More

GemCad View of the French Blue Enclosed Within the Tavernier Blue
A Crystallographic Analysis of the Tavernier Blue Diamond

This study uses both historical information and modern data to create a computer model of the Tavernier Blue, orienting the finished diamond within the original diamond crystal.

Read More

Coloured Diamonds in the Aurora Butterfly of Peace Collection
The “Type” Classification System of Diamonds and Its Importance in Gemmology

Knowledge of type allows gemmologists to better evaluate if a diamond might be treated or synthetic, and whether it should be sent to a laboratory for testing.

Read More

Treated-Colour Pink-To-Red Diamonds from Lucent Diamonds Inc.

Using a multi-step process, Lucent Diamonds has developed a new treatment process for certain natural diamonds that creates colours from pink-purple to red to orangey brown.

Read More

Characterisation and Grading of Natural-Colour Pink Diamonds

Known for their great beauty and rarity, pink diamonds have long been sought after by jewellers, collectors and consumers.

Read More

Gemesis Laboratory-Created Diamonds

High-quality synthetic diamonds created by the Gemesis Corp. are examined and their gemmological properties are explicated.

Read More

Natural-Colour Nonconductive Grey-to-Blue Diamonds

Two new categories of grey-to-blue diamonds are described.

Read More