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.

01
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Grow sparkling borax crystals over a chenille heart to make a beautiful crystal heart.
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

02
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Paint a window with a solution that turns into crystal frost right before your eyes.
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 ‚Äčanother 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

03
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Epsom salt crystals needles grow in a matter of hours. You can grow clear or colored crystals.
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

04
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This salt crystal geode was easy to make and used only common kitchen ingredients.
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 takes 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.

05
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Blue crystals of copper sulfate or copper sulphate.
These are blue crystals of copper sulfate pentahydrate, which is known as copper sulphate pentahydrate in the UK. 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

06
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This single crystal of ammonium phosphate grew overnight.
This single crystal of ammonium phosphate grew overnight. The green-tinted crystal resembles an emerald. Ammonium phosphate is the chemical most commonly found in crystal growing kits. 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

07
of 07

In the Smithsonian kits, these are called 'frosty diamonds'.
In the Smithsonian kits, these are called 'frosty diamonds'. The crystals are alum on a rock. 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