Pietersite
| Colour | Gray, Blue, Brown, Red |
|---|---|
| Mohs hardness | 7 |
| Chemical formula | SiO 2 |
What is Pietersite?
Pietersite is a commercial term for a variety of the mineral chalcedony. Originating from Namibia and China, where it is mined for use as a decorative stone due to its chaotic chatoyancy and brecciated structure.
How to identify Pietersite
- Hardness: Mohs 7 — hard enough to scratch glass.
Pietersite in different forms
Stones often confused with Pietersite
Frequently asked questions
How hard is Pietersite?
Pietersite is Mohs 7 on the hardness scale.
What colour is Pietersite?
Pietersite is typically gray, blue, brown, red (Brown-red, blue-gray, yellow).