Silver turquoise marquise oval centre twisted ring r752 this feminine sterling silver turquoise and marcasite ringfeatures an ovalcabochonof turquoise stone the december birthstone the striking stone issurrounded by glittering marcasite and framed by a beaded silver design all our turquoisejewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of skilled craftsmen turn the raw turquoisestone into these stunning pieces of jewellery you