Research Article Search Results
Internal World of Aquamarine from Xinjiang
Yellow Zoning in Pink Diamonds
Unusual natural pink diamonds displaying faint yellow color zoning and strong yellow fluorescence are studied in the Carlsbad laboratory.
Star Aquamarine
A New Treatment: Creating Phantom Structure in Opal
A newly developed treatment creates a phantom structure in opal visually similar to natural phantom opal.
Fire Obsidian’s Beguiling Spectrum
Origins of Color in Brown Mammoth Ivory
Investigates the mineral and chemical compositions and surface morphology characteristics of brown mammoth ivory to identify the origins of its brown color.
Color Modification of Spinel by Nickel Diffusion: A New Treatment
Reports on a newly discovered treatment process for producing a deep blue color in natural spinel and proposes identification criteria.
Gem-Quality Augite from Dong Nai, Vietnam
Offers a comprehensive look at a variety of augite from Dong Nai, Vietnam, detailing its formation and gemological characteristics.
Pink Pyrope Garnet
A rare example of pink pyrope garnet is examined in the Carlsbad laboratory.
“Atypical Beads”: Variations of Two Types of Nuclei
Four atypical bead cultured pearls with variations on two types of nuclei are examined in the Mumbai laboratory.
