FREQUENTLY ASKED QUESTIONS - How can I calculate the finger measurement? You can learn your finger size from the nearest jeweler or from the Diamond Business Ring Size page. - Are your products silver? Our products are 925 sterling silver and are covered by a lifetime warranty. - Do you have a discount on collective purchases? We have a discount on bulk orders. We have a reduction in collective purchases in police rings, military rings and other corporate rings. Please contact to get detailed information. - How is the guarantee of lifetime maintenance and repair? or all the products you buy from our dealers, "maintenance and repair I want" note if you send us the necessary transactions will be made and free shipping to you will be sent. - What is the shipping fee? All Turkey to shipping is free. - Are your stones natural? Our stones are synthetic stones, they are heat resistant and do not break during any operation (such as enlarging or shrinking the finger scale). It 's not from zircon stones on the market. - How many days is the order delivery time? Order delivery time is 4 weeks.