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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 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 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
  • 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
  • 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!
  • 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 Origin
    GIA’s Diamond Origin tells the story of how diamonds mined from these countries support jobs, education, and health care and in many cases, how they help protect the environment in and around local mining communities
  • Understanding the 4Cs of Diamond Quality - GIA 4Cs
    This framework is both a way to better understand your diamond, and to ensure accuracy in the evaluation of your diamond’s unique characteristics It is the best way to ensure clear information, uniform practices, scientific grading and transparent evaluation in the global diamond industry




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