
Given the rarity and value of diamonds, it’s not surprising that experimenters have long sought to replicate a natural diamond or treat it to increase its value. Because synthetics, simulants, and treatments are becoming more advanced and harder to detect, a GIA Diamond Grading Report is essential to know what you’re really buying. There is nothing inherently unethical about treating a diamond, but U.S. law requires full disclosure. GIA’s research efforts have been critical in identifying each of the diamond treatment techniques described here and is committed to helping the gem-buying public know exactly what they’re buying.GIA wants you to understand exactly what you’re buying when shopping for your diamond. As creators of the 4Cs and the International Diamond Grading System™, GIA set the standards for diamond grading and has been helping consumers make educated diamond buying decisions for over 50 years.