Research Article Search Results
The Cause of Iridescence in Rainbow Andradite from Nara, Japan
“Rainbow” andradite from Nara, Japan, occurs as relatively small orangy brown crystals that show attractive iridescence in almost the entire range of the spectrum.
Jewelry Development Impact Index
The Jewelry Development Impact Index (JDI), one of the initiatives from the second Jewelry Industry Summit in January 2017, has become the flagship project of the Minerals, Materials and Society (MMS) program at the University of Delaware. Patricia Syvrud, development manager of MMS, discussed the program, which she calls a “road map to responsibility.”
Colored Stones and Pearls | Gems & Gemology
Burmese Jade: The Inscrutable Gem
Introduction to the Micro-World of Gems
Amber with Mite Inclusion
An unusual mite is preserved in a 30-million-year old amber specimen.
Dumortierite-Quartz Rock Presented as Sapphire
The Gem Testing Laboratory of Jaipur, India, received for identification an opaque blue specimen, submitted as sapphire.
Unusual Pink Sapphire Bead
