Featuring May’s birthstone, the emerald, the stone is believed to symbolise health, fertility and faithfulness. This ancient belief that stones possess positive natural power dates back to biblical times and denotes one’s personality traits based on the month you were born. The Smile charm is removable, giving you the option to wear just the hoop. Additionally, the charm can be turned into a small pendant. Hoop Metal: 18ct Recycled Gold plating on Recycled Sterling Silver 925 Hoop Diameter: 13mm Smile Coin Diameter: 11mm Gemstone: Emerald Weight: 2. 8gs 925 Sterling Silver with 18ct Gold plating. Store your Kasun jewellery separate from other jewellery to prevent scratches and protect plating, clean with a soft cloth or a special anti tarnish jewellery cleaning cloth.