The material is titanium steel, which will never tarnish or turn your finger green. Shipping: 1. We will ship the package out by USPS first class mail next day after receiving the payment. 2. USA address: Shipping time usually takes about 3-4 days. 3. Canada address: Shipping time usually takes about 7 days. 4. Other country: Shipping time usually takes about 10 days. Return: Returns are accepted if you notify me within 7 days of receiving the item that you would like to return it. Once the item is returned to me I will refund the full amount less the shipping fees. If you would like to exchange an item please contact me within 7 days of receiving the item so we can agree on arrangements.