Calsilica is layers of pottery glaze cut into a one of a kind shape to form a “stone”, this particular one is quite unusual and is from Santa Fe, New Mexico. I added a tiny turquoise in the bail. The bail has a 17mm opening and will fit most necklaces. The pendant including bail is 2.5 inches long. A satin finish and pretty patina highlight the stones. Free shipping within Canada and complimentary polishing cloth is included.