This lovely Colors in Rhythm® couple's necklace features two entwined hearts which cradles two birthstones that shimmer as they move. This necklace includes a box chain that is secured with a spring ring clasp. You may personalize with two engraved names. 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.