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Pietersite

Specimen cases holding small mineral samples on a reference tray, viewed from above.

Properties

Property table of the Wikipedia article “Pietersite”, reprinted as recorded in the fetch.
CategoryTectosilicate minerals
FormulaSiO2
ColorBrown-red, blue-gray, yellow
Mohs scale hardness7

From the Wikipedia article

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.

Source

Source record: crystal-compendium/pietersite/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.

https://en.wikipedia.org/wiki/Pietersite — revision id 1345806969. Text and properties from Wikipedia, licensed CC BY-SA 4.0.