GIA全年提供助學獎學金
Need-Based Scholarships Offered by GIA Year-Round
GIA’s industry-leading and globally-recognized diploma and certificate programs educate professionals with the skills needed for success in the gem and jewelry industry.
GIA恢復提供紙質版鑽石鑑定精簡版報告
GIA will return to producing printed GIA Diamond Dossier reports beginning April 9.
GIA恢复提供纸质版钻石鉴定精简版报告
GIA will return to producing printed GIA Diamond Dossier reports beginning April 9.
Starry Night in Diamond
Cloud inclusions resembling stars at night are observed in a faceted diamond.
GIA圖書館的無汞採礦展覽獲獎
GIA Library’s Exhibit on Mercury-Free Mining Wins Award
GIA於紐約主辦招聘會--助業界發掘人才和機遇
Career Fair – Powered by GIA is Back in New York
第六屆年度珠寶設計大賽 GIA彰顯新秀風采
As a leading educational institute, GIA helps educate the next generation of gem and jewelry professionals in gemology, jewelry design and jewelry manufacturing arts.
GIA’s 6thAnnual Jewelry Design Competition Highlights Emerging Talent
As a leading educational institute, GIA helps educate the next generation of gem and jewelry professionals in gemology, jewelry design and jewelry manufacturing arts.
GIA研究人員發現全新的尖晶石處理方法
Scientists at the GIA laboratory in New York City recently discovered spinel treated by nickel diffusion in a parcel of gems acquired for research purposes by the GIA research team in Bangkok.
GIA Researchers Identify New Spinel Treatment
Scientists at the GIA laboratory in New York City recently discovered spinel treated by nickel diffusion in a parcel of gems acquired for research purposes by the GIA research team in Bangkok.
Color Modification of Spinel by Nickel (Ni) Diffusion: A New Treatment in the Gem Market
GIA researchers report on a new nickel-diffusion treatment used to modify color in spinel and present criteria for identification.
A Partially Hollow Natural Blister Pearl Filled with Foreign Materials
A very large baroque white pearl is further examined in the Mumbai laboratory due to its suspicious heft.
“Electromagnetic Wave” Inclusion in Mong Hsu Ruby
Fiber-optic illumination reveals an electromagnetic wave-like pattern of particles in a ruby from Myanmar.
Two Black Non-Nacreous Bead Cultured Pearls from Pinctada margaritifera
The Carlsbad laboratory identifies two non-nacreous bead cultured pearls from Pinctada margaritifera.
An Extraordinarily Large Cat’s-Eye Emerald
The Tokyo laboratory examines a 126 ct cat’s-eye emerald from Brazil.
Extremely Rare Hellandite Inclusion Found in a Mogok Ruby
A rare inclusion is reported in ruby from the Mogok mine for the first time.
A Closer Look at Internal Etch Channels in Diamond
The Carlsbad laboratory reports on a Fancy Deep brownish yellowish orange diamond featuring trigons within subsurface etch channels.
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