Gota de Aceite in a Zambian EmeraldA phenomenon usually seen in Colombian emeralds is found in a specimen from Zambia.
2018 GIA SymposiumScientists and business leaders will gather at a summit of the gem and jewelry industry. Read More
Aragonite Spheres in Ethiopian OpalUnusual inclusions are found in an opal from Ethiopia’s Wollo Province.
Update on Dyed Hydrophane OpalOpal purportedly from a new deposit is found to be dyed.