Collana a catena esagono a fetta piatta in onice nero in argento sterling placcato oroAbout This Item A contemporary geometric necklace featuring cuts of hexagon shaped black onyx slices with beaded detailing lined along a chain of yellow gold plated sterling silver. Gemstone Information Be seduced by the dark beauty of black onyx. Often used in carved cameo jewellery, black onyx provides a beautiful contrast and a gothic edge to your jewellery collection. Jewellery Collection Gemondo's Slice Collection is a celebration of geometry