9ct yellow gold blue john thirteen stone square cushion bracelet b538 this statement link bracelet features thirteen cushion shaped cabochonsof rare blue johnstone that have been sourced directly from the treak cliff cavern in castleton the stones are framed by highly polished 9ct yellow goldand the bracelet is articulated by solid gold links links itfastensby a classic lobster clasp for easy wear all our blue johnjewellery is designed and crafted within our very own workshops in der