Recent Advances in Understanding the Geology of Diamonds
Examines the last two decades’ advances in analyzing and understanding the formation of natural diamonds, and their relation to the earth’s formation.
Books: Fashion Jewellery: Made In Italy
Chronicles the rise of Italian fashion jewelry from its traditional roots to the visually stunning designs of contemporary artists.
Titanium-Bearing Synthetic Alexandrite and Chrysoberyl
Overview and commentary on the 2013 Journal of Gemmology article “Titanium-Bearing Synthetic Alexandrite and Chrysoberyl.”
Blue Sapphires from the Baw Mar Mine in Mogok
Reports on the microscopic, chemical, and spectroscopic features that differentiate the high-quality Baw Mar sapphire from “classic” gem-quality Burmese sapphire.
Gemological Characteristics of Coated Jadeite Jade
Analyzes the effects of coating on green jadeite specimens using DiamondView imaging, microscopy, spectroscopy, and Raman spectrophotometry.
Update on Gemstone Mining in Luc Yen, Vietnam
Explores the emergence of the Luc Yen area as a producer of corundum, spinel, tourmaline, and other colored stones.
Large Synthetic Moissanite with Silicon Carbide Polytypes
Examination of the properties of a synthetic moissanite specimen submitted as a black diamond.
Spinel Submitted as Diamond
It is a rare occurrence when a diamond simulant submitted to a GIA laboratory turns out to be a natural gemstone.
Faceted Wurtzite from Tanzania
The rarity and value of faceted wurtzites from Tanzania are sure to draw the attention of gem collectors.
Demantoid Garnet Fossil Pseudomorphs
In these two extremely rare specimens, demantoid garnet replaced coral and gastropod fossils.