Odd ball datolite from the Arcadian Copper mines,Houghton county,Michigan.It is 1 1/2" x 1" x 1/4" and has been polished on the face. Buyer pays all shipping by small flat rate  box or international postal codes and extra insurance if requested and will combine items for cheaper shipping cost.Thanks for looking and look at our store for other mineral specimen and Lake Superior Copper banded/replacement Agates and Copper included Agates some of the oldest and rarest Agates on this planet.