Lupa · Rock & Mineral ID
Point your camera at a find. Lupa answers the way a good field guide would: a short, honest list of candidates — never a single overconfident guess — plus the field checks that actually tell them apart. Streak, hardness, a drop of vinegar. Your collection, your map, the geology under your feet.
It flags hazardous minerals before suggesting you touch anything, and it says “no good match” when that's the truth.