
次のタイプで宝石を見る:
器具類
リサーチ

Garnet History and Lore
Thousands of years ago, red garnet necklaces adorned the necks of Egypt’s pharaohs, and were entombed with their mummified corpses as prized possessions for the afterlife.
Garnet Care and Cleaning Guide
Learn about garnet's durability and how to care for your garnet jewelry.
GIA's Gubelin Gem Project: Garnet
Often thought of as a deep red gemstone, garnet can also be yellow, orange, green or brown – any color except blue.
The Latest in Field Gemology from Wim Vertriest: Sapphires and Demantoid Garnets from Northern Madagascar
Learn the latest on Madagascar sapphires and demantoid garnets from Wim Vertriest, GIA Manager of Field Gemology.
G&G Features in a Flash: Texas Topaz
Learn about Texas topaz history and geographic origin research.
New and Notable Finds from the GIA Lab: Winter 2023
Discover a bicolor chameleon diamond, a diamond with carbon dioxide, and a pink square inside a diamond.
Gems of Northern Madagascar Video with GIA Field Gemology
Learn all about the gems of Northern Madagascar in this exciting video with Wim Vertriest, GIA Manager of Field Gemology.
Jeweler Creates ‘Medal of Honor’ Pin to Recognize Coronavirus Health Care Fighters
GIAの卒業生、Franco Valobraが、命を救うために新型コロナウイルスと最前線で闘う医療従事者に感謝の気持ちを表して記念のピンを制作します。


.png)



.jpg)


