| Material | Crystal Shape | Color | Difficulty | Where to Find | |----------|--------------|-------|------------|----------------| | Table salt (NaCl) | Cubes | White | Easy | Kitchen | | Sugar | Monoclinic | White/clear | Easy | Kitchen | | Alum (aluminum potassium sulfate) | Octahedra | Clear | Easy | Spice aisle or online | | Borax | Prisms | White | Easy | Laundry aisle | | Epsom salt | Needles | White | Very easy | Pharmacy | | Copper sulfate | Prisms | Bright blue | Medium | Online or hardware store |
Cover the jar loosely with a paper towel (to keep out dust while allowing evaporation). Place it somewhere undisturbed—no vibrations, no temperature swings, no curious fingers. Check it daily. Small crystals will begin forming within hours, but full growth takes 1–2 weeks. diy crystal growing
This is the method used by serious hobbyists. It relies on water slowly evaporating into the air over weeks or months. | Material | Crystal Shape | Color |