Silkstone from the Cuyuna Iron Range of Minnesota. This material is getting very rare. One of our cutters dug up a couple slabs of the old material. Silkstone is a Tiger Eye like gemstone. This material is not quite as golden as good Tiger eye. It has a slight green tinge to it. It's actually very pretty. This stone is 44mm (1.75") x 15mm (.58") add another .5" for the ring and bail. Chain not included