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Pearl
Perfect shining spheres. Lustrous baroque forms. Seductive strands, warm to the touch. Pearls are simply and purely organic.
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Research
An “Eye” on a Tridacninae Pearl
A Tridacninae pearl exhibits a flame structure resembling an eye.
RFID Device Embedded in South Sea Bead Cultured Pearl Necklaces
The Bangkok laboratory reports an increasing number of RFID devices embedded in pearls, including two recently submitted South Sea bead cultured pearl necklaces.
Irradiated and Dyed Akoya Pearls
The New York laboratory reports on a submission of pearls with a combination of irradiation and dye treatments.
Pearls from the Placunidae Family (Windowpane Oysters)
A report on windowpane oyster pearls analyzed in GIA’s laboratories.
Unusual Large Nacreous Pen Pearls
A report on the identification of three large baroque pearls submitted to the Mumbai laboratory.
Small Freshwater Bead Cultured Pearls
The Carlsbad laboratory reports on a strand of 78 light bluish gray pearls submitted for identification.
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.
Gem Crystals – Tucson 2014
Innovative Optical Effects, Unique Rings with Raw Crystals – Tucson 2014
A Large Multicolored Natural Blister Pearl
A large baroque-shaped blister pearl with a unique multicolored appearance is examined in the Mumbai laboratory.
Iridescent Pen Shell
Aragonite and calcite create a captivating iridescent effect in a Pinnidae shell.
Saltwater Clamshell Beads (Tridacna Species) Used in Freshwater Cultured Pearls
A report from GIA’s Bangkok laboratory on freshwater bead cultured pearls with saltwater bead nuclei.
