Origin: Cooma Metamorphic Complex, southeastern New South Wales, Australia

Description: Often known as black jade, but this is in fact not. It takes a beautiful polish, and has a deep consistent black colour.

Actinolite is a mineral belonging to the amphibole group, which is commonly found in metamorphic rocks. Black actinolite, also known as magnesio-actinolite, is a type of actinolite that has a black color due to the presence of iron and magnesium in its crystal structure.

Chemical Composition: Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂.

Grade: Lapidary Grade
Appearance: Opaque
Inclusions: none, a minute amount of matrix.

Approximate Size of 1 pc: 13cm x 5cm x 2cm
Approximate Weight of 1 pc: 200g

Rough is rough. We do our best to grade and describe pieces in the lot, but ultimately, they all differ.