Jade is believed to be able to help one person, but to strengthen contacts with it.Feel cool jade, purify thoughts, quiet the mind and induce a meditative state . It also is thought to cause more frequent handling beautiful jade luster . According to Chinese proverb . "Jade is cool , because it comes from a clear mountain stream nature" Science , said: "Jade is a cool feeling , because it is a non- conductor . Product Details - Shape / Type : Bangle / Bracelet - Material / Gemstone : Natural Emerald / fees and crafts - Standard international shipping ( 10-18 days for delivery ) - Level / Type : 100 A / A / A -level - Refractive index: 1.66 - 1.67 - Specific gravity: 3.33 - 3.34 - Color: White, - Size : pi yao size length 38mm width 11mm thick 8mm ( adjustable band , suitable for all people ) . - Weight (g / CT): ~ 46.35 g / 231.75 kt .. - Luster: vitreous luster - Surface texture: medium grain - Condition: Excellent Freight Policy Therefore, the standard international shipping 10 - 19 days to deliver to you Yes, we provide a tracking number , so you can keep track of all information . Registered mail All with online tracking number of the package we will ship by registered mail