Do I need to worry about artificial diamonds?

There are two types of diamonds that may be used in the place of genuine, natural diamonds:

Diamond simulants simply look like diamonds because of their color, however, their chemical compositions and physical and optical properties are different. The stones can be natural, such as the colorless gem white topaz, or lab-created, such as cubic zirconia or a colorless piece of glass. Diamond simulants are often extremely difficult for even trained gemologists to identify. One diamond simulant that's sold in the market under the trade name Moissanite actually fools a diamond tester and gives a false-positive reading.

Diamond synthetics are diamonds that are created in a laboratory with the identical chemical composition and crystal structure of a diamond. These diamond synthetics always test positive on a diamond tester and are extremely difficult, if not impossible, for even a trained gemologist to identify.

Diamond simulants and diamond synthetics could potentially be sold in the place of genuine diamonds. Therefore, it's imperative to have a qualified professional ultimately confirm that a grading report matches the diamond it's representing. This confirmation should always be repeated after your diamond is serviced.