Our products are sent with certification and invoice. It is shipped within 1-2 days. Change is available. If you have anything you would like to have printed on the product, you can send it through the order questions section. All sizes and colors are made. The products are optionally available in 14-18 carat. Gold, white and rose colors of the product are optional. Product Setting: 8 Setting 333 Product color: Gilded Product gram: 2-50-3-20 There may be +-5% change in product gram due to production.