The cording is black leather, simple and masculine. The stone is a sodalite nugget, very dark blue with occasional markings of white calcite. The nugget is handwired with sterling silver and is approximately 3/4" to 1" long. A great accent for guys who live in blue jeans! As shown, necklace is 20". Available from 18" to 22" at no extra charge. Sterling silver clasp. (Lobster clasp is shown - if you prefer a sterling silver hook clasp, just mention it!)