Connemara marble

Connemara marble or "Irish green" is a rare variety of green marble from Connemara, Ireland. It is used as a decoration and building material. Its colour causes it to often be associated with the Irish identity, and for this reason it has been named the national gemstone of Ireland. It strongly resembles the verd antique, a green serpentinite breccia found in the Mediterranean. It is named after the region in which it is found (including Lissoughter in Recess, County Galway, and in Clifden). The marble was deposited as a limestone mud during the neoproterozoic.