Spinel is one of the hottest gems right now, and the rarest one of them all is the famed and elusive ‘Cobalt Spinel’. For a long time, they were really only found in Vietnam but MADLY is proud to be part of the 2021 discovery of Cobalt Spinel in Tanzania. The gem discovery of the decade. Put on this chunky and edgy ring, and wear a piece of gemstone history.