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Research
How to Choose a Gem of a Jeweler
Just as you consult with other professionals for important advice, you should turn to a professional jeweler to make a jewelry purchase a pleasurable event.
Warm Up to Cocoa-Colored Gems
Chocolate has found its way to the necks, arms, hands, and bodices of fashion runway models. According to experts at GIA (Gemological Institute of America), gemstones with warm, brown tones are heating up.
Gemstone Lore
Gemstones have long been believed to carry healing, protective and even magical properties.
GIA Opens Laboratories in Israel and Japan
By bringing industry-leading diamond grading services directly to important gem markets, GIA is making its services more easily accessible.
Screening of Mounted Melee Using the GIA iD100
GIA’s new screening device accurately identifies an HPHT-grown melee diamond.
Unusual Dumbbell-Like Inclusion in Diamond
Examination of a 0.40 ct near-colorless round brilliant diamond with a large inclusion resembling a dumbbell
Observations on GE-Processed Diamonds: A Photographic Record
Observations made at GIA on 858 GE-processed diamonds revealed several interesting features that may be diagnostic of this kind of diamond. Specifically, a significant percentage exhibited a slightly hazy appearance, noticeable internal graining, and other unusual internal features.
Two Near-Colorless General Electric Type-IIA Synthetic Diamond Crystals
Gemological examination of two near-colorless, isotopically pure, carbon-12 synthetic diamonds grown recently by General Electric reveals short-wave ultraviolet luminescence behavior, a cathodoluminescence pattern, and small metallic inclusions that are typical of other gem-quality synthetic diamonds.
An Update on Filled Diamonds: Identification and Durability
This report focuses on recent products from Yehuda/Diascience, Koss & Schecter Diamonds (Genesis II), and Clarity Enhanced Diamond House (a subsidiary of Goldman Oved Diamond Co.).
Revolution in Diamond Cutting: Laser Sawing of Diamond Crystals
This article describes the components and operation of the laser saw and its usefulness in diamond cutting.
A Report on the New Watermeyer Split-Facet Diamond Cuts
Introducing a new technique in diamond cutting that virtually eliminates the
An Era of Sweeping Change in Diamond and Colored Stone Production Markets
The diamond, colored stone, and pearl businesses have witnessed unprecedented change since the turn of the 21st century.
