Identify rocks instantly

This stone ID app called Rock Identifier (Google Play, iOS) works fast in scanning and identifying rocks, minerals, and crystals. It’s got an extensive database so you can compare your stones to other images, as well as learn its chemical and physical properties, locality, uses, etc. I use it as an encyclopedia to learn more about how to identify minerals and how to tell real from fake crystals or gemstones. There’s a 7-day free trial, but for me it’s worth the $29.99 yearly subscription. — CD