Reviews the advancements and major trends in laboratory-grown diamonds observed by GIA since 2007.

Provides a visual guide to the internal features of tourmaline as well as tourmaline inclusions in other gem hosts.

A natural faceted diamond displays a prominent square-shaped cloud under the table.

Examines gem-quality cassiterite from southwest China and analyzes trace element chemistry to distinguish it from Bolivian cassiterite.

Arcade-style games in Japan dispense akoya pearl jewelry as prizes.

A natural saltwater pearl displays the optical illusion of a bumpy texture.

An overview of the Summer 2024 Gems & Gemology content.

Learn the latest on Madagascar sapphires and demantoid garnets from Wim Vertriest, GIA Manager of Field Gemology.

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

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

An overview of the 2024 Tucson gem shows.

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

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

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

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

Beryl and emerald specimens from a recent discovery in Newfoundland are examined at GIA.

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

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

A pair of watermelon tourmaline slices from the Cruzeiro mine displays a rainbow of colors.