- Toenail, 2.9 x 2.6 x 1.2 cm
- Delaware Mine (Delaware Conglomerate Mine), Delaware, Keweenaw Co., Michigan, USA
2.9 x 2.6 x 1.2 cm (largest). A showy and excellent sawed and polished datolite nodule pair from the famous Delaware Mine of Michiganâ€™s Copper Country. The slices have high lustre, a nice porcelaneous texture and the snow-white rind is very attractive around the mottled copper-included rust-red interior. Quality is off the charts.