Research Article Search Results
Effects of Blue Fluorescence on Diamond Appearance, Color Treatment and Brightening of “Edison” Pearls, and a Pioneering Gemstone Market in Pakistan
An overview of the Summer 2021 Gems & Gemology content.
Namak Mandi: A Pioneering Gemstone Market in Pakistan
Documents Namak Mandi’s transformation from a salt market to one of Pakistan’s primary gem trading centers, with a look at the commercial activities taking place today.
Mobile Inclusions in a Decorative Quartz Object
Inspired fashioning showcases mobile inclusions in a polished quartz specimen, reminiscent of an hourglass.
Iridescent Abalone Shell
The optical phenomenon of iridescence creates a beautiful pearly rainbow effect in an abalone shell.
Colorful Inclusions in Diamond
Inclusions can be found in a variety of different gemstones; they create a window that allows the viewer to picture a stone’s formation history.
Neptunite Inclusion in Benitoite
Raman analysis confirms that the yellow-orange to deep red inclusion in a faceted benitoite is indeed neptunite.
Transparent Rhodonite with Clarity Enhancement
A clarity-enhanced rhodonite stuns with its exceptional size, transparency, and vivid color.
CVD Laboratory-Grown Diamond with Counterfeit GIA Inscription
A CVD laboratory-grown diamond with a fraudulent GIA inscription is submitted to the Antwerp lab.
Exquisite Opal Strand
Natural opal beads displaying vibrant play-of-color are strung together to create a remarkable necklace.
Melo Pearl Found in a Melo Shell
A beautiful melo pearl is accidentally served up for lunch within its host gastropod.
Rare Mixed Type IaB-IIb Diamond with a Long-Lasting Phosphorescence
Phosphorescent-based screening initially results in a rare mixed-type natural diamond falsely testing as laboratory-grown.
Pearl Classification: The GIA 7 Pearl Value Factors
Provides a visual guide to GIA’s approach to classifying and describing pearls.
