GIA图书馆的无汞采矿展览获奖
GIA于纽约主办招聘会–助业界发掘人才和机遇
GIA支持策办的Powered by GIA招聘会将于3月13日上午九时三十分到下午三时三十分在纽约市贾维茨会议中心（Jacob K. Javits Convention Center）举行，有兴趣在宝石和珠宝行业发展的人才千万不要错过。
GIA于纽约主办招聘会–助业界发掘人才和机遇
GIA支持策办的Powered by GIA招聘会将于3月13日上午九时三十分到下午三时三十分在纽约市贾维茨会议中心（Jacob K. Javits Convention Center）举行，有兴趣在宝石和珠宝行业发展的人才千万不要错过。
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.
Unusual “Horsetail” and Columnar Inclusions in Demantoid
Examination of a yellowish green demantoid reveals fibers of serpentine in a randomly curved pattern and a columnar two-phase negative crystal.
Four-Rayed Star Chrysoberyl
A unique combination of two intersecting cat’s-eyes is observed in chrysoberyl at the Tokyo laboratory.
Never Stop Innovating: Gem Artist Chi Huynh
Profiles a groundbreaking gem artist on a quest to bring new concepts, techniques, and products to the industry.
Gems Formed in Magmatic Rocks
This installment of “Colored Stones Unearthed” covers gemstones that formed in magmatic environments and the insights they offer into the evolution of the earth and the geological processes that shaped our world.
Fluorescence Characteristics of Two Copper-Diffused Plagioclase Feldspars: Labradorite and Andesine
Examines the use of strong fluorescence near 394 nm under 320 nm excitation as a potential means of identifying copper diffusion treatment of feldspar.
Composition and Spectral Characteristics of Porcelain-Treated Turquoise
Characterizes turquoise treated with an inorganic additive that dramatically improves the luster and color of low- and medium-quality material.
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