Rare and elegant Mexican Psilomelane 10-12mm freeform beads (ETB01215)

Psilomelane

Psilomelane, also known as black hematite, is a group name for hard black manganese oxides such as hollandite and romanechite. Psilomelane consists of hydrous manganese oxide with variable amounts of barium and potassium.

Dimensions of beads:

Size: 10 x 19.5 x 5 - 12 x 26 x 5.5 mm
- this is only an approximate, the size varies slightly

Length: 7.5 inches

Finishing: Polished