Diamonds, as the hardest substance on earth, are resistant to damage. However, diamond jewelry is set in different metals, and wear will vary from piece to piece. The girdle can be chipped by a hard blow, making a protective setting extremely important.
It is a good idea to have your diamond cleaned at least once a year by a jeweler. The wear of the setting can be checked at the same time. Diamond jewelry should be stored in a soft cloth pouch so that to insure.