- 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
- Diamond - Gemological Institute of America
what's in a name? Diamond [dye -mund] (noun) Diamond comes from the Greek word adamas which means “invincible ” For being the hardest material on earth, that is the perfect name for this gem!
- How to Buy A Diamond - GIA 4Cs
It isn’t until a diamond is cut, that the real beauty of a diamond begins to take shape With a GIA Diamond Grading Report, you can confidently make your next diamond purchase
- 天然钻石 | 钻石 - GIA
钻石只在地球表面之下大约 100 英里的高温和高压条件下形成。 钻石的碳原子在所有方向上的键合都基本相同。 另一种矿物 - 石墨，同样也仅包含碳，但其形成过程和晶体结构却大不相同。 石墨十分柔软，您可以用它写字，而钻石则十分坚硬，两块钻石相刻仅仅产生刮痕。 钻石描述 钻石的历史与
- 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
- GIA Diamond Research
Whether examining the laboratory-grown diamonds submitted for grading reports, growing CVD diamonds at our research facility in New Jersey, or altering these materials through treatments, GIA is staying at the forefront of characterization and identification of laboratory-grown diamond
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