Research Article Search Results
“Electronic Device” in an Atypical Bead Cultured Pearl
GIA’s Hong Kong laboratory looks at a new radio-frequency identification (RFID) technology for tracking cultured pearls.
Fluorescence Spectroscopy for Colored Pearl Treatment Screening
A nondestructive rapid screening technique uses fluorescence spectroscopy to identify treated colored pearls.
Russian Emerald
Untreated Russian emeralds, rarely seen in the market, demonstrate a range of color and degree of fineness.
Nigerian Gems and Jewelry
Mina Stones promotes Nigerian gems including rubellite and sapphire as well as reviving traditional skills and symbols in the creation of original jewelry.
Quarterly Crystal: Unknown Inclusion in Triphane Spodumene
Staurolite in Ruby
Reversible Twinning in Neodymium Pentaphosphate
Application of slight pressure perpendicular to the twinning planes reveals the unusual property of this synthetic gem.
Pallasitic Peridot with Iridescent Needle-Like Inclusions
Numerous needle-like inclusions exhibit vibrant interference colors in a suite of pallasitic peridot from the Jepara meteorite.
Third Annual Gianmaria Buccellati Foundation Award Winner
A delicate, ethereal necklace depicting a diamond butterfly caught in a gem-studded spider’s web won the third annual Gianmaria Buccellati Foundation student jewelry design contest.
History of the Chivor Emerald Mine, Part I (1880–1925): From Rediscovery to Early Production
Chronicles developments at the Chivor emerald mine in Colombia between 1880 and 1925, based on archival records.
Large and Fine Demantoid from Russia
Unusually large top-quality faceted Russian demantoid garnets with the characteristic lovely green to yellowish green color excite attention at the Tucson GJX show.
Solid Carved Dark Gray Diamond Ring
A ring made entirely of natural diamond was recently submitted to GIA’s New York laboratory.
