These cuff links feature dyed stingray leather mounted in sterling silver. The stingrays that hail from the waters off eastern Asia have glossy skin that reflects light and sparkle like diamonds. Stingray leather is also extremely durable and was used by Japanese Samurai for armor. To minimize tarnish, please store the cuff links in the box and clean with a soft polishing cloth periodically. Do not immerse in silver cleaing solution. Made in the USA. Presented in a gift box.