Research Article Search Results
Phenomenal Emeralds from Chitral, Pakistan
GIA’s Bangkok laboratory encounters two phenomenal gems while examining a parcel of emeralds from Pakistan.
Beryl from Newfoundland, Canada
Beryl and emerald specimens from a recent discovery in Newfoundland are examined at GIA.
Quarterly Crystal: Diamond in Diamond
Examination of a South African diamond reveals an eye-visible diamond inclusion.
The Appeal of Non-Nacreous Pearls
Several vendors offered a variety of impressive non-nacreous pearls at the Tucson gem shows.
Iridescent Imitation Pearl
A brown oval specimen submitted to the Bangkok laboratory resembles a pen pearl at first glance.
Large CVD-Grown Diamond Resubmitted after HPHT Treatment
A record holder for largest CVD-grown diamond is examined for a second time in the Carlsbad laboratory after HPHT treatment.
Trigon Party on a Diamond
A cluster of trigons is observed on the surface of a 1.01 ct natural diamond.
An Exceptional Cat’s-Eye Emerald
A double cabochon cat’s-eye emerald conjures fond memories for an estate dealer in Tucson.
The Lengthy Vertical Journey of Superdeep Diamonds
Explores the journey of superdeep diamonds to the earth’s surface.
CVD with “Ancient Text” Clouds
A CVD-grown diamond exhibits an interesting clarity characteristic.
Unusual Inclusions in Natural Emerald from Chivor
Tubular three-phase inclusions are observed in a Colombian emerald.
