Jewellery, Watches and Objects of Vertu

A star dioptase and diamond ring, brooch and earring suite, each centred with a collet set cabochon black star dioptase, within a rectangular hoop frame set with single-cut diamonds, mounted in two colour precious metal, stamped ‘750’, brooch length 34mm, ring size W. £1500-2000

Star dioptase is a black variety of the stone in which orientated elongated magnetite inclusions produce a distinctive four rayed asymmetric star under a singular light source.