Atlantisite! A gorgeous cut and polished atlantisite cabochon from Tasmania, Australia. Atlantisite is a variety of serpentinite consisting of serpentine group minerals and purple stichtite occurring only in Tasmania, Australia. Locality: Stichtite Hill, Dundas mineral field, Zeehan District, Tasmania, Australia Size: H3.8 x W1.5 x D1.0 cm. Weight: 10.5 g, 52.5 ct