Datolite,translucent with nice veins and off white mossy out growth from the veins,kind of stalagmite like , it was collected around the Empire Copper mine,Iron City,Drexel too close to call for sure, Keweenaw county,Michigan. It is 1 1/8" x 1" x 1/2" and weight 9.9 grams. It has been polished on the face up to 100,000 with diamond compounds ,there some micro red dots or spheres in the face and the outer rind/husk shows the veining of the Datolite intrusion into the nodule.Collected this 2012 season in the Keweenaw. Buyer pays all shipping by zip or international postal codes and insurance if requested. Thanks for looking and look at our store for other mineral specimens and Copper replacement and included agates some of the rarest Agates in the world.