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- Natural Diamonds | Diamond Stone – GIA C
Get to know all you need about diamond – the history, facts, quality factors, treatments, imitations and much more here at GIA
- Diamond History and Lore
Diamond’s splendor has been appreciated for centuries, but there was not much scientific knowledge about it before the twentieth century Since then, diamond knowledge has grown steadily, with research by chemists, physicists, geologists, mineralogists, and oceanographers
- Diamond Description
Diamond forms under high temperature and pressure conditions that exist only within a specific depth range (about 100 miles) beneath the earth’s surface Diamond’s crystal structure is isometric, which means the carbon atoms are bonded in essentially the same way in all directions
- Converge 2025 - GIA
Diamond Grading Lab Gem Identification Lab Pearl Grading Lab
- Education Books - GIA Store
diamond grading; gem identification; accessories; replacement parts; software upgrades; books charts gemology; appraisals; history lore; gemkids journals; gems gemology subscription; issues; one-year sets; point of sale tools co-branded assets; brochures; case display signage; counter tools; bundles; digital sales tools co-branded
- Diamond Quality Factors
The 4Cs describe the individual qualities of a diamond, and the value of an individual diamond is based on these qualities The terms that people use to discuss the 4Cs have become part of an international language that jewelry professionals can use to describe and evaluate individual diamonds
- Diamond Cut: Anatomy of a Round Brilliant
Jewelers and gemologists use a specific set of terms to describe parts of a polished diamond Certain measurements of the shape or proportions ultimately have an affect on the round brilliant diamond’s cut grade
- 美国宝石研究院 | 宝石大全 - GIA
Unique diamond and emerald-lensed spectacles from the Mughal Empire were tested in GIA’s New York laboratory Read More
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