~US imported brass, lead-free and nickel-free, in line with US and EU standards. ~Swarovski Crystal https://live.staticflickr.com/65535/48041536482_c86f57b56b_c.jpg https://live.staticflickr.com/65535/48041438056_d5b37c69f3_c.jpg ~Why lead-free and nickel-free? https://en.pinkoi.com/store/jadeartjewelry?... ~No dyeing, glue or welding is involved in the production. ~Colour of each piece of work is unique due to natural oxidation of brass. Your understanding is appreciated. Feel free to contact us before any purchase. ~All piece of work is coated with wax to slow down further oxidation. However, metallic oxidation is a natural process, therefore, we advise customer to store the jewels in bag and jewelry box in dry and cool area. ~Please avoid water when wearing your brass jewelry. ~Since every piece is unique and handmade, only a small amount is made each time. Please contact before any purchase to ensure there is enough stock. ~This product is handmade, and so may not look exactly the same as the photo. About Shipping: ~ Jade Art Jewelry processes orders from Monday to Friday. All orders placed on weekends will be shipped on Monday. ~ Oversea Customers, yours product will be shipped by Hong Kong Post Registered Air Packet.