The beauty of Dendritic Agate is that each one is unique and stunning. This 21 x 18 mm dendritic agate has been bezel set in sterling silver and set on a 1 1/2 x 1 1/4 inch rounded triangle, textured sterling silver back plate. The back plate is open behind the stone to let light through and patina has been added for contrast. The pendant comes on an 18 inch sterling silver chain.