Rare and elegant Mexican Psilomelane 8-11mm freeform beads (ETB00940)

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:
smallest bead : 9 x 21 x 5 mm
the largest bead : 11 x 30 x 5.5 mm

- this is only an approximate, the size varies slightly

Length: 7 inches

Finishing: Polished