Rare and elegant Mexican Psilomelane freeform beads (ETB00854)
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 18 x 4.5 - 11 x 25 x 5.5 mm (21 PCS)
- this is only an approximate, the size varies slightly
Length: 8.5 inches