Amethyst with goethite 36.54 ct.

Amethyst with goethite

The goethite is an iron hydroxide and become magnetic after heated ( is a special feature that occur only in this iron oxide)

Here we can see some nice tufts parallel oriented into the crystals with yellow-brownish color.On the edges small cristobalite.

  From Brazil.

Size:35.2x28.3x5.6 mm

Weight: 36.54 ct.

CODE# 5990