The manganese oxide-based gemstone Psilomelane Dendrite jewelry is prized for its distinctive dendritic patterns that are both intricate and rare. The unique appearance of the stone is due to the formation of dendritic patterns, which result from the growth of manganese oxide crystals in a treelike or branching design. The prints are typically set against a lighter background and come in grey, black, or brown. Psilomelane Dendrite is durable and can be worn daily on 5-6 Mohs on the hardness scale. Psilomelane-Dendrite is a rare gemstone that enthusiasts and collectors highly prize.