About Gemdle
Gemdle is a daily crystal, rock and gemstone guessing game and a beginner-friendly identification guide. We believe the best way to learn stones isn’t a one-tap “AI says it’s amethyst” — it’s training your eye on the same observable clues geologists use: colour, lustre, hardness, streak and habit.
Gemdle pairs a quick daily game with a guided identifier and an A–Z stone library. Photos and physical-property data come from Wikimedia Commons and Wikipedia under CC BY-SA / public domain, with attribution on every image. We’re not a shop and we don’t appraise stones — we help you learn to recognise them. Questions: email us.