Tarma's Cut Stainless Steel -- Bold & Green When we started Tarma Designs in 2005, we chose a material and a manufacturing process that would lend itself to intricate detail, had a bold but simple look, was durable and could be worn 24/7. We wanted it go with an active lifestyle - hiking, cycling, running, yoga. And was something that you didn't have to take off or worry about. With a clean slate, we could do something different. For the material, we chose the very "green" 316L stainless steel. Tarma's 316L stainless has a +60% post-consumer recycled content. 316L can be worked in many different finishes, cut or cast, will never tarnish and is lightweight and strong. Often used in maritime and medical uses, this surgical grade material is very inert and does not oxidize, so it will never tarnish and is happy in the shower or swimming. For the manufacturing process, we chose Electric Discharge Machining , or EDM. The process allows