Saltwater Bead Cultured Pearl with Laminated Nucleus
Pallasitic Peridot with Iridescent Needle-Like Inclusions
Numerous needle-like inclusions exhibit vibrant interference colors in a suite of pallasitic peridot from the Jepara meteorite.
Ethical Gem Fair
A transparent supply chain and the education of artisanal miners were two of the many topics discussed at Tucson’s first Ethical Gem Fair.
Solid Carved Dark Gray Diamond Ring
A ring made entirely of natural diamond was recently submitted to GIA’s New York laboratory.
Diamonds Are Not Forever! Diamond Dissolution
Violent kimberlite eruptions impact the surface features of diamonds, which can give scientists useful information about how diamonds react with the fluids in the mantle.
Formation of the “Matryoshka” Diamond from Siberia
A freely moving diamond crystal completely enclosed in a diamond from Siberia gets its name from the famous Russian nesting dolls.
Diamond with Cavities Showing Radiation Evidence
Diamond formed at incredible depth shows evidence of radioactive fluids in cavities surrounded by green fluorescence halos.
Nephrite Jade from Multiple Sources
Green nephrite deposits are found at many locations around the globe, with British Columbia, Siberia, and northwestern China as the leading producers.
Phenomenon Resembling Play-of-Color in Sapphire
A phenomenon resembling play-of-color was seen in a 4.13 ct unheated sapphire recently examined by the author.
Large and Fine Demantoid from Russia
Unusually large top-quality faceted Russian demantoid garnets with the characteristic lovely green to yellowish green color excite attention at the Tucson GJX show.
Third Annual Gianmaria Buccellati Foundation Award Winner
A delicate, ethereal necklace depicting a diamond butterfly caught in a gem-studded spider’s web won the third annual Gianmaria Buccellati Foundation student jewelry design contest.
Diamond with Mobile Green Diamond Inclusion
Diamond inclusions are relatively common guests in diamond crystals.
Bismuth Glass-Filled Burmese Star Ruby
The Hong Kong laboratory recently examined a Burmese star ruby incorporating a significant amount of bismuth glass.
DNA Barcoding and Next-Generation Sequencing (NGS) of Freshwater Pearls
Spring 2020 G&G Publication Information
This document provides the publication information for Gems & Gemology
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