Bi-colour Quartz with Goethite (Cacoxenite) inclusions, Brazil. 8.04 carats.
Bi-colour Quartz with Goethite (Cacoxenite) inclusions, Brazil. 8.04 carats.
Bi-colour Quartz with Goethite (Cacoxenite) inclusions, Brazil. 8.04 carats.
Bi-colour Quartz with Goethite (Cacoxenite) inclusions, Brazil. 8.04 carats.
Bi-colour Quartz with Goethite (Cacoxenite) inclusions, Brazil. 8.04 carats.

Bi-colour Quartz with Goethite (Cacoxenite) inclusions, Brazil. 8.04 carats.

Product code: QUCG24
£27.00

Product information

A purple Amethyst and colourless Quartz cabochon from Minas Gerais, Brazil with Goethite 'organ pipe' inclusions.

The Goethite crystals, in the form of fan-like sheaves, are arranged in parallel rows across the face of the stone, their golden metallic lustre adding to the allure of this charming gem (see magnified images 4 and 5).

These inclusions are sometimes referred to as 'Cacoxenite', although this is a commercial name which is based on an early scientific mis-identification.

A small chip on one edge of the cabochon does not detract too much from the beauty of the gem.


weight:  8.04 carats
shape:   Oval cabochon
dimensions:   24.28 x 9.90 x 4.55 mm
treatment:  None

Technical specifications

Product Code QUCG24
Weight 0.02kg

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