This wishing stone is a piece of real Connemara marble, found only in the mountains of Galway and Mayo. Connemara marble is over 600 million years old, dating from the Pre-Cambrian Era and can be found only in a remote area in the West of Ireland. It is a metamorphic rock formed when limestone was heated under pressure, producing a hard granular rock. Its unique green colour, which symbolizes Ireland, is caused by the presence of various elements. Connemara Marble is thought to bring serenity to those who keep it close. Each stone will be a different shape, size and green colour.