This charming necklace is made with Connemara Marble and Sterling silver, the design is simple to show off the beauty of this natural gemstone accented by a trinity knot. Connemara Marble is a unique and rare form of Marble found in valley of the 12 Bens in Connemara, the heart of the West of Ireland. This beautiful marble, estimated to be over 900 million years old, gets its range of green color tones from the various natural elements only found in the limestone in this remote and rugged region on Irelands Atlantic Coast. This necklace has been Irish hallmarked by the assay office in Dublin castle and comes on a 18 inch sterling silver rolo chain. Every piece of Solvar jewelry crafted using Connemara Marble is totally unique as no two pieces are the same.