A GROUP OF THREE POLISHED MINERAL SPECIMENS, comprising a violet amethyst cluster, height: 2 3/4", width: 5 1/2", depth: 3"; a thin slice of brown agate, height: 6 1/2", width: 3 3/4", depth: 1/8"; and a large slice of blue quartz with druzy, height: 4", width: 7 1/4", depth: 1 7/8".