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30.5 carats
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Pietersite was discovered by Sid Pieters in 1962 in Namibia, and named in his honour.

Pietersite is a chalcedony with embedded fibers of amphibole minerals with varying degrees of alteration. The fibers cause a chatoyancy similar to that seen in tiger's eye.

Pietersite colours include blue, rusty red, gold and brown.

Pietersite Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.

Pietersite Gemstones by Size

This table shows distribution of Pietersite gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:5.98 cts
Heaviest:30.5 cts
Average:15.18 cts
Total photos:28
Do you have a larger Pietersite? Why not upload a photo?
5.98ct to 8.43ct8.43ct to 10.88ct10.88ct to 13.34ct13.34ct to 15.79ct15.79ct to 18.24ct18.24ct to 20.69ct20.69ct to 23.14ct23.14ct to 25.60ct25.60ct to 28.05ct28.05ct to 30.50ct
General Information
A variety or type of:Chalcedony, which is a variety of Quartz
Other Names/Trade Names:
Photos of natural/un-cut material from mindat.org
Further Information
Mineral information:Pietersite information at mindat.org
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