Research & Articles

Heat treated Sapphire in pressure environment

Heat treated Sapphire in pressure environment Lisa Greggio1, Muna Al Bulushi2, Maya Musa3 1 GIG Laboratory Director2 GIG Senior Gemology Analyst3 GIG Research Department Director Fig.1The 5.10 ct Oval...

A Peculiar Gem

Libyan Desert Glass, A Peculiar Gem Lisa Greggio1, Muna Al Bulushi2, Maya Musa3 1 GIG Laboratory Director2 GIG Senior Gemology Analyst3 GIG Research Department Director Fig.1 The LDG analyzed,...

New Methodology in Studying Amber Gemstones

Amber Identification: New Methodology in Studying Amber Gemstones A new methodology for the Amber characterization, combining the micro-ATR spectroscopy with ultraviolet (UV) fluorescence imaging, has been developed by GIG...

“Lonsdaleite Diamond”: What is All the Fuss About?

“Lonsdaleite Diamond”: What Is All the Fuss About? Maya Musa1*, Lisa Greggio2 1 Research Department director, Gulf Institute of Gemology, Sultanate of Oman. *Corresponding author: maya.musa@gulfgemology.com2 Laboratory Director, Gulf...