This is black Volcanic lava beaded necklace in size 8mm.
Round metal pendant with anchor is zinc alloy metal in size 10mm.
Necklace is adjustable in size. It has adjustable macrame knot that makes the cord slide trough and expand in size.
Material of the cord is black waxed nylon. Soft for the skin and safe to get wet. Great quality and durable cord. Thickness is 1mm.
*note: IF you have any questions regarding this product, please don't hesitate to ask.