Necklace Basic information ： Crystal ball diameter: 0.44 inchCrystal ball material: water-foam jadeNecklace length: 17.38 inchNecklace material: 925 silver Weight: 2.66g  Earrings Basic information ： Diamater: 0.44 inch Material: Hotan JadeShape: Round Color: 925 Silver Weight: 3.30g  Maintenance instructions:1. Please seal and store it when not wearing it, and do not expose it to damp environments.2. Before taking a shower, please remove jewelry such as necklaces, bracelets, and rings to avoid prolonged contact with hot water.3. Necklaces, bracelets, rings, and other jewelry should avoid contact with seawater to prevent them from turning black or yellow.4. Jewelry such as necklaces, bracelets, and rings that come into prolonged contact with sweat may turn black or yellow.5. When necklaces, bracelets, rings, and other jewelry turn black or yellow, they can be wiped with a professional silver cloth that comes with the product, and the product will return to its original color.