Easy Crystals to Grow

Easy Alum Crystals Project

An alum cystal
By Ude (Own work) [ GFDL or CC BY-SA 3.0], via Wikimedia Commons

Are you looking for an easy, safe, reliable crystal-growing project? These alum crystals may be the easiest crystals you can grow.

Why This Project Rocks

  • Non-toxic crystal (alum is a spice)
  • Uses hot tap water, not boiling water
  • Easy to do - mix and wait
  • Extremely reliable results - crystals will grow
  • Only requires a few hours for good crystal growth
  • Results in crystals large enough to pick up and examine

    Grow Easy Alum Crystal

    To grow these crystals you will need:

    • 1/2 cup hot tap water
    • 2-1/2 tablespoons alum

    Simply stir the alum into the water and wait for crystals to grow. Alum crystals usually are visible within a half an hour and reach a good size within a few hours. It's that easy! When the crystals are to your liking, use a fingernail to scrape them off the side of your container. You can examine them and keep them.