Why Treat Diamonds?
Diamonds are usually treated to make them more attractive to the eye or remove small fractures or minor imperfections like foreign material.
Treatments can enhance color, clarity, or both.
Clarity is enhanced by filling techniques (fracture or laser), while color is affected by treatments like coating, irradiating, or high-pressure high-temperature (HPHT) treatments.
Coatings are not permanent, but the other treatment methods are considered to be.