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?
5-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.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Wonderstone Rhyolite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Wonderstone Rhyolite typically shows a dull luster.
- 4Match the color rangeCompare against the expected color range: brown, tan, yellow, orange, red, white, purple.
- 5Look at form & habitCrystal system: amorphous. Typical habit: massive.
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
- Streak
- White
- Luster
- Dull
- Transparency
- Opaque
- Crystal system
- Amorphous
- Crystal habit
- Massive
- Cleavage
- None
- Rarity
- Common
- Uses
- Lapidary, Decorative, Collector
- Host rock
- Volcanic Rhyolite Flows
- Typical price
- $5-50 for slabs or polished specimens
Where rockhounds find wonderstone rhyolite
1 mapped spotsClassic worldwide localities
- Utah, USA
- Nevada, USA
- California, USA
Field-hunting tip
Look in volcanic rhyolite flows country — that is the host setting where wonderstone rhyolite typically forms. If you start seeing quartz, feldspar, biotite in float, you are in the right ground. Field specimens usually show a massive habit, so train your eye for that shape before scanning the outcrop. 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?+
How much is wonderstone rhyolite worth?+
What rocks look like wonderstone rhyolite?+
What minerals are found with wonderstone rhyolite?+
What kind of rock does wonderstone rhyolite form in?+
What is wonderstone rhyolite used for?+
Find wonderstone rhyolite on the map
RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.
