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Easy Crystal Growing Recipes

Reliable and Simple Recipe for Growing Crystals


Growing crystals yourself can be easy! Here's a collection of recipes for the easiest crystals to try.

Borax Crystals

Grow sparkling borax crystals over a chenille heart to make a beautiful crystal heart.
Anne Helmenstine
Borax is a chemical sold as a laundry booster and for insect control. Dissolve borax in hot water to produce crystals overnight. These crystals grow readily on pipecleaners, so you can make crystal hearts, snowflakes or other shapes.
  • 3 tablespoons borax
  • 1 cup boiling water
Borax Crystal Heart
Borax Crystal Snowflake
Black Borax Crystals

Crystal Window Frost

Paint a window with a solution that turns into crystal frost right before your eyes.
Anne Helmenstine
This reliable crystal growing project produces crystals in a matter of minutes. Prepare a non-toxic crystal growing solution that you wipe onto windows, mirrors or other surface to produce a crystal "frost".
  • 1/3 cup Epsom salt
  • 1/2 cup hot water
  • 1 teaspoon liquid dishwashing soap
Crystal Frost Instructions | Crystal Frost Video

Refrigerator Crystal Needles

Epsom salt crystals needles grow in a matter of hours. You can grow clear or colored crystals.
Anne Helmenstine
This project uses hot tap water, not boiling water, so it's safer for young crystal growers. Place the crystal solution in the refrigerator and get sparkly needle-like crystals within a few minutes to a few hours. It's that easy!
  • 1/2 cup Epsom salt
  • 1/2 cup hot tap water
  • food coloring (optional)
Refrigerator Crystal Instructions

Salt Crystal Geode

This salt crystal geode was easy to make and used only common kitchen ingredients.
Anne Helmenstine
Natural geodes require thousands of years to form, but it only take a couple of days to make a geode yourself. This geode grows on calcium carbonate, which is simply an eggshell. The crystals are beautiful cubic salt crystals. You can leave the crystals naturally clear or add food coloring for color.
  • eggshell
  • salt
  • boiling water
  • food coloring (optional)
Read the full instructions.

Copper Sulfate Crystals

Blue crystals of copper sulfate or copper sulphate.
Anne Helmenstine
Copper sulfate crystals grow easily, plus they are naturally vivid blue with an interesting crystal habit. Copper sulfate is readily available online or you can find it in some stores that carry root kill or algicides that use copper sulfate as their primary ingredient.
  • copper sulfate
  • very hot tap water
Copper Sulfate Instructions | Copper Sulfate Timelapse Video

Easy Ammonium Phosphate Crystals

This single crystal of ammonium phosphate grew overnight.
Anne Helmenstine
There's a reason monoammonium phosphate is the chemical included in commercial crystal growing kits! Ammonium phosphate can be made in any color and displays an interesting crystal habit.
  • 6 tablespoons monoammonium phosphate
  • 1/2 cup very hot tap water
Full instructions

Easy Alum Crystals

In the Smithsonian kits, these are called 'frosty diamonds'.
Anne Helmenstine
Alum crystals are clear crystals that grow in pyramids and other prisms. One of the most popular projects is to mix the alum and water together and pour the solution over a small rock to make fake "diamonds".
  • 2-1/2 tablespoons alum
  • 1/2 cup very hot water
Alum Crystal Instructions

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