“Frozen River” on the Surface of an Atrina Pearl
Layered aragonite crystals create a translucent frosted surface appearance on a nacreous pearl from an Atrina mollusk.
Fashioned Queen Conch Shell Bead
A Queen conch shell bead is submitted for pearl identification to the Mumbai laboratory.
Metallic Core in a Natural Freshwater Pearl
Examination of a natural freshwater pearl reveals a metallic core and suggests environmental contamination during the pearl’s formation.
Natural Pearl Necklace from Baja California Sur, Mexico
The Carlsbad laboratory reports on a recently submitted necklace containing 63 pearls of various colors, shapes, sizes, and mollusk species, reportedly from Mexico.
An Unusual Saltwater Bead Cultured Pearl
A look at an unusual saltwater bead cultured pearl consisting of two parts.
GIA Student Design Showcase
A GIA student from the London campus receives recognition for a necklace design featuring baroque pearls, diamonds, and light pink garnets.
Brown Zoning in Diamond
Strong linear brown zoning is observed in a Fancy Dark yellow-brown diamond.
Rainbow-Colored Partially Healed Fissure in Blue Sapphire
An iridescent partially healed fissure is observed in a blue sapphire from Sri Lanka.
A Minute Foraminifera Shell in a Natural Non-Nacreous Black Pearl
Reports on the study of a foraminifera shell discovered in a pearl reportedly from a Pinctada radiata mollusk.