A discussion of DRIFTS vs the Beam Condenser FTIR attachment in the testing of pink sapphire. The DRIFTS accessory is generally much better at unmasking heat treatment in ruby and sapphire.
The ethics of gem enhancement disclosure.
Lotus Gemology's E. Billie Hughes looks at the important sapphire producing localities in Madagascar, along with the key gemological features that can help separate them from other sapphire sources.
An orangish pink “padparadscha” sapphire was submitted for testing at Lotus Gemology’s Bangkok laboratory. Testing showed a number of conflicting features that suggested the gem was a cleverly treated synthetic pink sapphire designed to imitate natural padparadscha.
A discussion of the literature of ruby and sapphire (corundum), with particular emphasis on the most collectible books covering ruby and sapphire around the world.
The examination of a yellow sapphire provides a lesson in the power of gemological microscopy.
