Research Article Search Results
Distinctive Fluorescent Crystal Inclusions in Spinel
A cluster of transparent inclusions in spinel displays various fluorescent colors under short-wave ultraviolet light.
Quarterly Crystal: Chromite in Diamond
A partially etched colorless diamond octahedron hosts numerous opaque black chromite crystals.
Baw Mar Sapphire, China’s Freshwater Pearl Industry, Glass-Ceramic Imitation Gemstones, and Red and Orange Spinel from Myanmar and Vietnam
An overview of the Summer 2026 Gems & Gemology content.
Goethite Sprays in Apatite
Examination of a green-blue apatite reveals goethite in a surface-reaching fracture.
Fireworks in Aquamarine
Iridescent thin films in aquamarine resemble fireworks in the night sky.
“Basketball Player” in Diamond
A diamond’s cloud and crystal inclusions create a unique scene.
High-Clarity Suite of Color-Change Pyrope Garnets
Todd Wacks exhibits his exceptional graduated suite of 65 matched color-change pyrope garnets from Morogoro, Tanzania.
“Comet Tail” Needle Cluster in Garnet
A cluster of needle inclusions in a pyrope-almandine garnet is reminiscent of a comet’s tail.
Gold Sheen Sapphire
A variety of colors and effects were observed in “gold sheen” sapphire from eastern Kenya.
“Meteor Shower” in a Pearl
A natural nacreous pearl from the Mytiloidea superfamily displays a visual effect suggestive of a meteor shower.
Tucson 2026: Pearl Market Report
An update on the global pearl market from vendors at the Tucson gem shows.
