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Pearl
Perfect shining spheres. Lustrous baroque forms. Seductive strands, warm to the touch. Pearls are simply and purely organic.
Tools
Applications of X-Ray Radiography and X-Ray Computed Microtomography in Gemology
X-ray imaging techniques revolutionized pearl testing by enabling gemologists to distinguish natural from cultured pearls through detailed visualization of their internal structures, evolving from film-based systems in the early 1900s to today’s sophisticated digital equipment.
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International Jewellery Kobe 2024
An overview of one of the premier international jewelry trade shows in western Japan.
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Pearls Marketed as “Venezuelan Pearls”
GIA’s Mumbai laboratory reports on a study of 988 reportedly “Venezuelan pearls.”
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“Cotton Pearl” Imitations
An in-depth look at a new pearl simulant gaining popularity in the fashion jewelry market.
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An Unusual Saltwater Bead Cultured Pearl
A look at an unusual saltwater bead cultured pearl consisting of two parts.
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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.
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“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.
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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.
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A Multicore Non-Bead Cultured Pearl
A non-bead cultured pearl with six cores is discovered in a large lot of pearls submitted to the Mumbai laboratory.
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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.
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