Publication

The mineral has perfect cleavage and high brittleness, which does not add to it technological properties conducive to mass use.

Another black stone used for the manufacture of jewelry inserts is a mineral of the amphibole supergroup - pargasite.

Clinochlor is a magnesium aluminosilicate with an additional hydroxyl group.

Lepidolite in the form of a micro- or fine-grained aggregate or lepidolite-feldspar rock is quite suitable for use as an ornamental material, from which not only decorative items are made, but also cabochon inserts in jewelry.

Many people know this variety of microcline as a green opaque or translucent stone, often with white perthite albite ingrowths.