Rare and elegant Mexican Psilomelane 15.5-24.5mm freeform beads (ETB00811)



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:

smallest bead : 15.5 x 16 x 6.5 mm
the largest bead : 24.5 x 29.5 x 7.5 mm

- this is only an approximate

Length: 16.5 inches

Finishing: Polished

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