Research Article Search Results
“Spiderweb” Structure on a Pearl’s Base
Examination of a natural pearl reveals a cavity formation with thread-like filaments.
Interpenetrant Twins in Natural Diamond
A vivid orangy yellow rough diamond displaying penetration twinning is examined in the Carlsbad laboratory.
Hardstones in Fine Jewelry
Eleux Jewelry offers unique pieces pairing hardstones such as agate and turquoise with diamonds and other precious gems.
Euhedral Aquamarine Crystals in Quartz
Microscopic examination of quartz reveals well-formed blue hexagonal prismatic crystals exhibiting moderate pleochroism.
Emerald with Abundant Magnetite Inclusions
An unusually high abundance of magnetite in four distinctive crystal habits is observed in a Zambian emerald.
Ninth Annual Gianmaria Buccellati Foundation Award Winner
A graduate of GIA’s Jewelry Design program in Carlsbad, California, is the recipient of the 2025 Gianmaria Buccellati Foundation Award.
Cinnabar in Quartz
Striking red cinnabar inclusions are observed in a quartz specimen from China.
A Fashioned Dyed Shell Imitation Pearl
An imitation is identified in a parcel of non-nacreous pearls submitted to the Mumbai laboratory.
New Chrysoprase Production from Western Australia
GIA’s Bangkok laboratory reports on a study of rough and cut chrysoprase from a newly discovered deposit in Western Australia.
Chocolate Opal
A common opal from Ethiopia examined in the New York laboratory bears a striking resemblance to a bar of chocolate.
Your Purchase Feeds: Vaibhav Global Limited’s Social-Impact Approach
Global retailer VGL offers ethically sourced jewelry while partnering with hunger-relief organizations to provide meals for children.
Uniquely Patterned Clouds in Sri Lankan Sapphire
Particle clouds with an interlocking triangular pattern are revealed in a blue sapphire from Sri Lanka.
