Rock & Crystal Identifier

Rock identifier and crystal identifier. Photograph any rock, crystal or mineral to identify it and learn the tests that confirm it.

IDENTIFY ROCKS AND MINERALS
This rock identifier names the likely mineral from a photo and explains the visible properties that led there. It covers the quartz family, feldspars, fluorite, calcite, pyrite, hematite, beryl, garnet, tourmaline, malachite, obsidian and common fossils.

CONFIRM IT YOURSELF
Each result suggests the physical tests that would settle it. Hardness against a fingernail, a coin, a knife or glass. Streak colour on unglazed porcelain, which is far more consistent than the colour of the specimen itself.

DYED AND TREATED STONES
A large share of crystals sold at fairs and online are dyed, heat-treated or simply glass. Dye concentrates in cracks rather than distributing evenly, and the app flags what it can see.

IS IT A METEORITE?
Almost certainly not, and the app explains why — vesicles, the small bubble holes in slag and volcanic rock, rule out most suspected finds.

Handles raw specimens, tumbled stones and cluster pieces.