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Garnet

Garnets are a set of closely related minerals forming a group, with gemstones in almost every color.

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Research

Monstrance from the Treasury of Cologne Cathedral

Baroque-Era Rose Cuts of Colored Stones: Highlights from the Second Half of the Seventeenth Century

Karl Schmetzer, April 5, 2021

Offers a systematic evaluation of rose cuts produced for various colored stones in the latter seventeenth century, based on the examination of rare artifacts that belonged to the archbishops and prince-electors of Trier and Cologne.

The symbol of medicine, the caduceus (wings on each side of the top of a staff with two snakes intertwined around it) stabbing thru the coronavirus. A garnet sits at the top of the staff.

Article

Jeweler Creates ‘Medal of Honor’ Pin to Recognize Coronavirus Health Care Fighters

Amanda J. Luke, May 14, 2020

GIA graduate Franco Valobra creates a commemorative pin to recognize health care workers on the frontline of the coronavirus battle for survival.

Gem materials and in front of rare books.

Article

Top 10 Digital Reads from the GIA Library

GIA Library Staff, April 2, 2020

Explore GIA’s collection of free, rare digital books and manuscripts that document the history of gems and jewelry.

A large red-orange crystal of wulfenite is nestled in the arms of matrix.

Article

Arizona Road Trips: Wild West Gem and Mineral Localities

Sharon Bohannon, November 18, 2019

Arizona’s scenic desert and mountain landscape is the perfect backdrop for a modern Wild West road trip in search of gem and mineral treasures.

The octopus head is a baroque Tahitian cultured pearl and its arms are made of black, yellow and white diamond (in a striped pattern) set in black-plated 18K gold.

Article

A Tropical Paradise of Ocean-Inspired Jewelry and Gemstones

Sharon Bohannon, August 9, 2019

Escape to a warm-water paradise in your mind with these jewels that formed in the sea, are inspired by marine life and evoke the ocean’s essence.

Article

Jewels of Hollywood: Accessories and Jewelry that Made the Stars Shine

Amanda J. Luke, July 16, 2019

“Jewels of Hollywood,” on loan from the Kazanjian Foundation, showcases some of the jewelry and accessories associated with Hollywood royalty.

Details of two engravings representing the treasury of Aachen Cathedral.

The Talisman of Charlemagne: New Historical and Gemological Discoveries

Gerard Panczer, Geoffray Riondet, Lauriane Forest, Michael S. Krzemnicki, Davy Carole, and Florian Faure, May 15, 2019

Reveals new details about this historical jewel and the results of its first gemological analysis.

An oval shaped bicolor tanzanite has purple on each side with blue-green in the middle.

Article

December Blues: Birthstone Gifts that Will Delight

Sharon Bohannon, December 7, 2018

Looking for a gift for someone special? December’s birthstones offer a treat for every taste, style and personality – even if it’s not their birth month.

A rectangle-shaped gold box, decorated with filigree, granulation and gems.

Article

Metalwork Takes a Bow: Techniques that Enhance Gemstone Jewelry

Sharon Bohannon, November 9, 2018

This collection of jewelry images illustrates how metalwork techniques showcase gemstone and jewelry designs.

A miner in northern Tanzania examines rhodolite.

Gemstone Guidebook Project

Jennifer-Lynn Archuleta, August 9, 2018

A project coordinated by GIA and the NGO Pact provides a valuable educational tool to women miners in Tanzania.

This Month's

Featured Gems

Peridot

Found in lava, meteorites, and deep in the earth’s mantle, yellow-green peridot is the extreme gem.

Fancy Color Diamond

Dazzling brilliance. Captivating color. These are the planet’s most valued gems.

Diamond

Diamonds are among nature’s most precious and beautiful creations.

Emerald

Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.

Citrine

Citrine is the transparent, pale yellow to brownish orange variety of quartz.

View the Gem Encyclopedia

Garnet

Research

Reviewed

Topics

Topics

Gemstones

Gemstones

Featured Gems

Peridot

Fancy Color Diamond

Diamond

Emerald

Citrine

Garnet

Research

Reviewed

Topics

Topics

Gemstones

Gemstones

Featured Gems

Peridot

Fancy Color Diamond

Diamond

Emerald

Citrine

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G&G Winter 2020 Edition