Wonderstone is a banded rhyolitic volcanic rock known for its intricate, flowing patterns of layered colors created by mineral-rich fluids. It is popular among lapidary artists for its ability to take a high polish and display unique, often landscape-like designs. Collectors typically find it as weathered nodules or boulders in arid western U.S. volcanic regions.
Is this wonderstone rhyolite?
3-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch wonderstone rhyolite with a known reference. Wonderstone Rhyolite sits at Mohs 5.5-6.5, softer than the next harder reference, harder than the previous one.
- 2Read the lusterHold the specimen under a strong light. Luster: dull.
- 3Match the color rangeCompare against the expected color range: brown, tan, yellow, orange, red, white, purple.
Often confused with
Wonderstone Rhyolite vs. its common look-alikes, and how to tell them apart in the field.
Often found alongside wonderstone rhyolite
Minerals reported to co-occur with wonderstone rhyolite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Mohs hardness
- 5.5-6.5
- Density
- 2.3-2.5 g/cm³
- Luster
- Dull
- Transparency
- Opaque
- Rarity
- Common
- Uses
- Lapidary, Decorative, Collector
- Host rock
- volcanic rhyolite flows
Where rockhounds find wonderstone rhyolite
1 mapped spotsClassic worldwide localities
- Utah, USA
- Nevada, USA
- California, USA
Field-hunting tip
Where it forms: volcanic rhyolite flows. If you start seeing quartz, feldspar, biotite in float, you are in the right ground. In the U.S., the densest reported localities are in California. Start trip planning there.
Common questions
How do you identify wonderstone rhyolite?+
Where is wonderstone rhyolite found?+
Can I find wonderstone rhyolite in the United States?+
What rocks look like wonderstone rhyolite?+
What minerals are found with wonderstone rhyolite?+
What kind of rock does wonderstone rhyolite form in?+
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Find wonderstone rhyolite on the map
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