This Miracle Links necklace represents the unbreakable bond between a mother and her child. Two interlinking circles can be personalized with the birthstones of your choice and engraving on the front and back. Add a new link (sold separately) each time your family grows, and celebrate the miracle all over again. 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.