Examination of a pear-shaped ruby reveals hollow Rose channels.

A new type of transparent moonstone seen in Tucson displays a distinct orange flash effect.

A brown oval specimen submitted to the Bangkok laboratory resembles a pen pearl at first glance.

Opening day at the AGTA GemFair included the unveiling of the “Treasure Chest II with Blue Boy” intarsia jewelry box.

Several jewelry designs incorporated historical artifacts at the Tucson gem shows.

A record holder for largest CVD-grown diamond is examined for a second time in the Carlsbad laboratory after HPHT treatment.

A wide range of Guatemalan jadeite jade in blue, green, and lavender hues was offered at the 22nd Street show in Tucson.

“Firework” sprays of hot pink to red epidote crystals are discovered in two rock crystal quartz cabochons.

Examination of gold bracelet bearing a 14K hallmark reveals a wax or resin material under gold plating.

A visit to the Tucson Fine Mineral Gallery uncovers impressive gemstone-related artwork.

A cluster of trigons is observed on the surface of a 1.01 ct natural diamond.

A double cabochon cat’s-eye emerald conjures fond memories for an estate dealer in Tucson.

An overview of the 2024 Tucson gem shows.

Explores the journey of superdeep diamonds to the earth’s surface.

Provides a basis for analyzing colored coatings on a variety of polished gemstones.

Characterizes a translucent variety of jadeite jade from the Morales mine in Guatemala.

Examines turquoise from northern China and identifies a geographic origin indicator to distinguish it from other Chinese sources.

GIA’s Mumbai laboratory reports on two non-nacreous pen pearls from Bahrain.

A CVD-grown diamond exhibits an interesting clarity characteristic.

A graduate of GIA’s Jewelry Design program in Taiwan is the recipient of the 2023 Gianmaria Buccellati Foundation Award.