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.