14K gold nut with 6mm gemstone "bolt" with attached 14K gold 18" .95mm diamond cut cable chain. Available as , - Montana Amethyst in 14K green gold bolt with white gold chain. - Fire Citrine in 14K gold bolt and chain . - Blue Topaz in 14K white gold bolt with a dark rhodium finish in the center and a 14K white gold chain. Like this design but want it with a different stone or metal? Contact us about customizing this design.