Aquamarine ** Lucky Stone ** • Lucky stone : md19e • Material : Silver • Natural stone : Aquamarine • Color : Silver • All handcrafted with contemporary art inspired by nature • Eco-friendly: Nickel and Lead free • 1 year guaranteed. If the items are discolored or tarnished within one year, we will clean it at no cost to you. If the item cannot be cleaned the item will be re-plated once for free Care Tips for Silver and Brass Jewelry 1.Do not expose jewelry to any chemicals such as lotion, cosmetics, hairspray, perfume, etc. 2.Try not to wear jewelry while sweating. 3.When undressing, wipe each piece with a clean soft cloth to remove oils and perspiration. 4.Avoid exposure to the air; store it in a zip lock bag. 5.Tarnish can be removed by dipping the jewelry into the silver dip for 5 second.