Description: The Crescent Mom Heart Engraved Pendant Size:1.47*0.93 Inch / 37.2*23.6mm Chain length:18 Inches Chain Width:0.8mm Weight:Weight 0.2 OZ / 5.95 grams Sterling Silver Composition While pure silver can be combined with many different types of metals, sterling silver is created when combining pure silver with copper. Sterling silver jewelry can be composed with different amounts of copper but is most often seen with the .925 stamp, meaning that the composition is of 92.5 percent silver and 7.5 percent copper. This has been found to be a good combination for maintaining the silver's durability without harming its sparkle. Caring for Your Sterling Silver Jewelry. Silver should not come into contact with harsh household chemicals such as bleach, ammonia, or chlorine. To avoid scratches, store silver in a lined jewelry box or pouch, as it is prone to tarnish as it naturally reacts with sulfur or hydrogen sulfide in the air. Cleaning and wearing silver jewelry regularly will prevent this and help maintain its shine. Immediately upon noticing any discoloration, use a gentle polish made specifically for removing tarnish. Package Including: 1* sterling silver necklace