This polished “lense” quartz is from Curvelo in Minas Gerais, Brazil. It is a natural transparent quartz that contains inclusions of colorful minerals including clays, chlorite, hematite and others. It has been polished to a gem luster. The various crystal and mineral formations in the quartz resemble fantasy land or sea-scapes. It is hard to capture the intricacies of the included mineral formations but they are better than the photos. It measures 2 1/2 x 1 3/4 x 1 3/8 x inches or 64 x 45 x 35 mm.