Caribbean Gem Ultra Jewelry Cleaning Kit with Cleaner & Polishing Cream Free from harsh chemicals Biodegradable Nontoxic Ammonia-free Acid-free Alcohol-free Fine Jewelry Fashion Jewelry and Costume Jewelry Antique Jewelry Gemstones <ul class="a-unordered-list a-vertical"> Precious and Semi Precious: <ul class="a-unordered-list a-vertical"> Diamonds Rubies Emeralds Sapphires Amethyst Tanzanite Topaz Garnet Peridot Tourmaline Soft Gemstones: <ul class="a-unordered-list a-vertical"> Coral Jade Turquoise Lapis Tigers Eye Onyx Moon Stone Opals and Pearls Chains, Bracelets, and Metals: <ul class="a-unordered-list a-vertical"> Gold Silver Platinum Scratched or Tarnished Metals Watches Glasses and Sunglasses Smartphone and Tablet Screens Do not soak soft gemstones in the cleaner for longer than 10 minutes. Do not soak opals or pearls in the cleaner for longer than 5 minutes. For antique jewelry, costume and fashion jewelry: Do not soak, clean by hand. Do not soak glasses or sunglasses for longer than 5 minutes. Only soak waterproof watches. For non-waterproof watches, only soak the band.