Hausmannite and Manganvesuvianite From N'Chwaning Mine, Kalahari, South Africa (Stand Included) Collectors Piece Black which give it an intense

which give it an intense emerald or blue-green colour

5cm by 3cmThickness 2

Benitoite forms light and dark blue

Canada- Collectors piece

Hausmannite and Manganvesuvianite From N'Chwaning Mine, Kalahari, South Africa (Stand Included) Collectors Piece Black which give it an intenseHausmannite and Manganvesuvianite From N'Chwaning Mine, Kalahari, South Africa (Stand Included) Collectors Piece Weight 340g Size 6cm by 7cm Thickness 4. 5cm Hausmannite is a complex oxide of manganese containing both di and tri valent manganese. Manganvesuvianite is a member of the vesuvianite group and is the manganese analogue of vesuvianite.