MATEO Donut 14-karat gold, malachite and diamond necklace

New York-based Mateo's sculptural necklace features a 'Donut'-shaped marbled malachite - the stone is believed to have lucky and protective qualities for those who wear it. It's strung from a 14-karat yellow gold chain and further adorned with a row of sparkling diamonds. The studded pendant opens, so you can remove it if you'd prefer.