Free Rock, Crystal & Mineral Identifiers
Upload a photo, get ranked identifications with hardness, habit, and field tests. Each identifier is tuned for one kind of specimen, so pick the one that fits what you found.
Rock or mineral
Rock Identifier
Upload a photo and get 3 ranked rock matches with Mohs hardness, typical environment, and the lookalike to rule out. Free, no signup, results in seconds.
- Reads banding, luster, fracture, crystal habit
- Mohs hardness range per match
- Names the lookalike to rule out, not just the answer
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Crystal
Crystal Identifier
Upload a photo to identify quartz, amethyst, calcite, fluorite and more by habit and termination. Returns variety names, not just species. Free, no signup.
- Returns varietal names: amethyst, citrine, smoky, not just 'quartz'
- Habit-aware: prismatic, rhombohedral, cubic, dodecahedral
- Lookalike crystals to rule out per match
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Mineral
Mineral Identifier
Upload a photo and identify minerals by color, luster, and habit. Get Mohs hardness, streak hints, and the one diagnostic test to confirm. Free, no signup.
- Returns Mohs hardness range per match
- Calls out luster, cleavage, and habit
- Names the streak / acid / magnet test to confirm
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Suspected meteorite
Meteorite Identifier
Upload a photo for an honest meteorite assessment from fusion-crust, magnet, and density cues. It calls out slag and 'meteorwrong' lookalikes first. Free.
- Skeptical by default, because most submissions are meteorwrongs
- Reads for fusion crust, regmaglypts, and surface density
- Names the most likely terrestrial lookalike per match
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Fossil
Fossil Identifier
Upload a fossil photo and get ranked IDs with geological age, host-rock context, and a similar fossil to rule out. Free, no signup, results in seconds.
- Ammonites, trilobites, teeth, plants, bones, coral
- Geological age estimate per match
- Host rock and depositional environment
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Petrified wood
Petrified Wood Identifier
Upload a photo to tell agatized, jasperized, opalized, and palm wood apart, with Mohs hardness and the lookalike to rule out. Free, no signup, instant.
- Tells agatized, jasperized, opalized, and palm wood apart
- Reads growth rings, ray cells, bark, and grain
- Mohs hardness tied to the replacement mineral
Open the petrified wood identifier →
Geode or nodule
Geode Identifier
Upload a photo to ID quartz, amethyst, calcite, and celestine geodes vs thundereggs and septarian nodules. Get lining mineral and host rock. Free, no signup.
- Tells geodes from thundereggs and septarian nodules apart
- Names the lining mineral (quartz, amethyst, calcite, celestine)
- Reads host rock when visible (limestone, basalt, rhyolite ash)
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Cut gemstone
Gemstone Identifier
Upload a photo of a cut, faceted, or cabbed stone and get ranked species matches with refractive index hints, Mohs hardness, and the gem to rule out. Free.
- Tuned for cut, faceted, and cabbed material (not raw crystals)
- Reads hue, tone, saturation, luster, and dispersion (fire)
- Mohs hardness and refractive-index hints per match
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Agate
Agate Identifier
Upload a photo to identify Lake Superior, Fairburn, Blue Lace, Botswana, moss, plume, and fire agates by pattern, color, and locality. Free, no signup.
- Reads pattern type: fortification, parallel, moss, plume, fire
- Names the variety (Lake Superior, Fairburn, Blue Lace, Botswana)
- Identifies color cause: iron, manganese, chlorite inclusions
Open the agate identifier →
Quartz variety
Quartz Identifier
Upload a photo to identify amethyst, citrine, smoky, rose, milky, rutilated, and Herkimer quartz by color, habit, and inclusions. Free, no signup, instant.
- Returns the variety name: amethyst, citrine, smoky, rose, milky
- Reads inclusions: rutile, tourmaline, fluid veils
- Flags heat-treated citrine vs natural
Open the quartz identifier →
Keep exploring
Want unlimited IDs in the field?
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