Mercury Free Mining Pilot Program

続きを読む

Stephen M. Avery: Celebrating Half a Century in Gem Cutting

Approaching his 50th anniversary in the business, Stephen M. Avery (Lakewood, Colorado) reflected on his journey to becoming an award-winning lapidary artist, detailing his signature cuts and gem sets and offering advice to up-and-coming gemstone cutters.

続きを読む

Blue Sapphire Lord of the Rings Pendant

続きを読む

Tucson 2022 Overview

Sellers and buyers alike were delighted to be back at Tucson for the show season after a two-year absence.

続きを読む

Custom Knives by Loren Feldman

Custom knife maker Loren Feldman details his craft, including his use of rare and fascinating materials such as gem dinosaur bone and meteorites.

続きを読む

Skull Carved of Meteorite

Four-billion-year-old meteorite carved into a life-sized human skull draws attention at the 2022 AGTA show.

続きを読む

Washington Jade Update

At the AGTA show, Rod and Nathaniel Cook of Washington Jade (Edmonds, Washington) told us about shifting their focus to cat’s-eye blue and bluish green nephrite jade.

続きを読む

Fifth Annual Gianmaria Buccellati Foundation Award Winner

Meghan Simmons, a graduate of GIA’s Jewelry Design program at the Carlsbad campus, received the fifth annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design.

続きを読む

Conversation with True Blue Opals and Gems

At the AGTA show, we spoke with Natassa Patel, who along with her mother, Salma, owns and operates True Blue Opals and Gems.

続きを読む

Spectacular Yellow Sapphire from Sri Lanka

160 ct yellow sapphire rough from Sri Lanka.

続きを読む

Star Topaz from Vietnam

続きを読む

こちらもご覧ください

YMAL GIA Ed
通学やオンラインでの教育について学ぶ
Learn About NextGem
GIA ネクストジェム(NextGem) ダイヤモンド研修 小売業向け
Explore GIA Laboratory Promotional Offers
GIAラボラトリーの特別オファーを見る
Shop the GIA Store
GIAストアで ショッピング