A blank canvas ready to be personalized, the smooth surface of this elegant round disc is ideal for a name, initial, date, or personal message on the front and back. The chain is adjustable from 16 to 18 inches and secures with a lobster clasp. Most natural gemstones pictured have been subject to an enhancement process or treatment (e.g. heating, oiling, diffusion, waxing, etc.), which may not be permanent and may require special care. Generally, most treated gemstone jewelry should only be gently cleaned by rinsing in warm water and dried with a soft cloth. Please refer to the FAQ section below for more information about gemstone enhancements and special care recommendations.