Genuine Smooth Polished Silver Top Black Tourmaline Stone Necklace Unisex! Great for both men and women. Perfectly imperfect! Each crystal varies, no two are ever the same. The necklace in the picture is an example of the one you will receive. Handmade to your order by the Artist! Comes on an 18" or 20" cord. Makes a great gift. Each necklace comes gift boxed.