New Emerald Production from the Curlew Mine, Western Australia
GIA’s Bangkok laboratory studies emeralds from the Curlew mine’s recently renewed production.
Dance of Light and Color: Painted Labradorite
Artist Valentina Fetisova transforms labradorite cabochons into remarkable works of art.
Micro-Features of Tourmaline
Provides a visual guide to the internal features of tourmaline as well as tourmaline inclusions in other gem hosts.
Laboratory-Grown Diamonds: An Update on Identification and Products Evaluated at GIA
Reviews the advancements and major trends in laboratory-grown diamonds observed by GIA since 2007.
Gem-Quality Anorthoclase Feldspar from Southeast Vietnam
Characterizes an anorthoclase variety of alkali feldspar found in southeast Vietnam and evaluates its potential for commercial use.
Gemological and Trace Element Characteristics of Cassiterite from Yunling, China
Examines gem-quality cassiterite from southwest China and analyzes trace element chemistry to distinguish it from Bolivian cassiterite.
悼念：GIA 理事 Rodney Ewing（罗德尼·尤因）博士
Rodney Ewing（罗德尼·尤因）博士在 2006 年至 2015 年间任 GIA 理事会成员，于本月初逝世，享年 77 岁。
悼念：GIA 理事 Rodney Ewing（罗德尼·尤因）博士
Rodney Ewing（罗德尼·尤因）博士在 2006 年至 2015 年间任 GIA 理事会成员，于本月初逝世，享年 77 岁。
GIA Alumni Celebrate 50ᵗʰ Reunion of First New York Graduating Class
Members of the first class to complete the GIA Graduate Gemologist® program in New York City gathered.
GIA准备连串活动参与拉斯维加斯珠宝展
Experience the world of gemology in person with GIA at Couture and JCK Las Vegas.
William Ruser: The Jeweler Who Charmed Hollywood
A new book chronicling the life of “Jeweler to the Stars” William Ruser is available now.
Update on Inclusion Scenes in Mozambican Rubies
GIA researchers identify zircon inclusions in several Mozambican ruby samples, potentially impacting origin determination criteria used for sources of East Africa ruby.
Phenomenal Emeralds from Chitral, Pakistan
GIA’s Bangkok laboratory encounters two phenomenal gems while examining a parcel of emeralds from Pakistan.
Beryl from Newfoundland, Canada
Beryl and emerald specimens from a recent discovery in Newfoundland are examined at GIA.
Unusual Aquamarine–White Beryl
An interesting bicolor beryl specimen composed of aquamarine and white beryl reportedly from Bahia, Brazil, is examined.
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