Mineral Mike

30.2ct deep blue tanzanite crystal

46g beautiful small quartz specimen

58g quartz crystal cluster from arkansas

42g double quartz crystal specimen

154g quartz crystal specimen

1038g pyrite crystal specimen on matrix

754g pyrite cube grouping on matrix

248g pyrite cube crystal cluster

826g pyrite cube specimen on matrix

28.41ct gemmy raw tanzanite crystal

11.86ct raw tanzanite crystal specimen

45.8ct rough tanzanite crystal specimen from tanzania

6.81ct tanzanite crystal from tanzania

10.59ct tanzanite crystal with calcite

36.47ct raw unheated tanzanite crystal specimen

10.91ct unheated natural tanzanite crystal

230g quartz mineral specimen from arkansas, usa

47g transparent quartz crystal from arkansas

740g large white quartz crystal cluster from colombia

8.40ct natural color tanzanite crystal from tanzania