Rocks Irish Collection Sterling Silver Claddagh Ring Decorated With An Emerald Green Cubic Zirconia Heart Shaped Stone Centre & White Channel Set Stones On The Shoulders. The Claddagh ring has centuries of history, but today it symbolizes three things: friendship, loyalty and love. Gift this to a friend or loved one so it will be worn and cherished forever. Its colour can be given as the birthstone for May, the emerald Colour, a symbol of rebirth, is believed to grant the owner foresight, good fortune, and youth. Stone Colour May Varey from the image.