Research Article Search Results
Update on Montana’s Rock Creek Sapphire
Assembled Bead Cultured Half-Pearl
Investigation in the Carlsbad laboratory reveals a pearl submission is not mabe as initially believed.
Checkered Pattern on Diamond
Evil Eye in a Flux-Healed Mong Hsu Ruby
Irreversible Photochromism in Synthetic Sapphire
Enormous South Sea Cultured Pearl with Filled and Partially Hollow Structure
Examination of a gigantic South Sea bead cultured pearl reveals an intriguing internal structure.
Devitrified Glass “Pom-Poms” in Ruby
Spiral Patterns on a Non-Nacreous Pearl
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.
Classification of Gem Materials Using Machine Learning
Explores the application of several machine learning models to complement traditional gem classification approaches.
Colored Bands in CVD-Grown Diamond
