Crystal Recipes by Color
Colored Crystal Recipes
This is a list of colored crystal projects. These crystal colors are natural, not caused by food coloring or another additive. You can grow natural crystals in pretty much any color of the rainbow!
Glowing - Glow in the Dark Alum Crystals
Alum crystals are among the quickest, easiest, and most reliable crystals you can grow. Did you know you can make them glow in the dark by adding a common household ingredient to the crystal growing solution?
Glow in the Dark Crystal Geode
It's very easy to make a glow in the dark crystal geode. The rock is a natural mineral (eggshell). You can use one of several common household chemicals to grow the crystals. The glow comes from phosphorescent paint, which you can get from a craft store.
Glow-in-the-Dark Crystal Snowflake
Learn how to make a glow-in-the-dark crystal snowflake or other glowing holiday ornament. This is a safe and easy project that's great for kids and kids-at-heart. The crystal decorations are light-weight and inexpensive to make.
Any Color - Rock Candy Instructions
Rock candy is candy made by crystallizing sugar. You can grow sugar crystals yourself, plus add color and flavor to make rock candy that you can eat.
You can grow crystals in any color - even black! This crystal growing recipe produces black crystals. You can make them solid black, like black diamonds, or translucent black, like smoky quartz.
White - Baking Soda Stalactites and Stalagmites
Make your own stalagmites and stalactites using baking soda or sodium bicarbonate. It's an easy, non-toxic crystal project.
Blue - Copper Sulfate Crystals
Copper sulfate crystals are among the easiest and most beautiful crystals that you can grow. The brilliant blue crystals can be grown relatively quickly and can become quite large. Here's how you can grow copper sulfate crystals yourself.
Blue - Calcium Copper Acetate Hexahydrate Crystals
Grow blue tetragonal crystals of calcium copper acetate hexahydrate.
Blue - Geode of Copper Sulfate Crystals
Geodes are rocks that contain crystals. Normally, millions of years are required for flowing water and minerals to deposit crystals, but you can make your own 'geode' in only a few days. Grow blue copper sulfate crystals inside an egg shell to make your own geode.
Blue-Green - Copper Acetate Monohydrate Crystals
Grow your own blue-green monoclinic crystals of copper acetate monohydrate.
Clear - Alum Crystals
Do you want to grow a big single crystal instead of a mass of crystals? Then try out these instructions for growing a big alum crystal. You can apply the techniques used here to grow big single crystals of other substances, too.
Clear Sodium Nitrate Crystals
Learn how to grow hexagonal sodium nitrate crystals.
Clear or Dyed - Ammonium Phosphate Crystals
Monoammonium phosphate crystals are among the quickest, easiest, and safest crystals you can grow. Learn how to grow these crystals yourself.
Clear or Dyed - Borax Snowflake
Do real snowflakes melt too quickly? Grow a borax snowflake, color it blue if you like, and enjoy the sparkle all year long!
Clear or Dyed - Cup of Quick Crystal Needles
Grow a cupful of epsom salt crystal needles in your refrigerator. It's quick, easy, and safe.
Clear or Dyed - Crystal Spikes in the Sun
Most crystals take days or weeks to form. Use this technique if you have a sunny day and want crystals FAST!
Clear or Dyed - Epsom Salt Crystals
Epsom salt crystals are easy to grow and form quickly. Here's what you need to know to make your own magnesium sulfate crystals.
Clear or Dyed - Potassium Alum Crystals
Potassium alum or potash alum crystals grow very quickly and easily. If you color the crystals red you can get beautiful 'ruby' crystals. Here's what you do.
Clear or Dyed - Quick Sheet Crystals
If you don't have the time or patience to grow crystals over hours, days, or longer, try growing these sheet crystals. You'll get results in seconds!
Clear or Dyed - Salt Crystal Rings
This is one of the quickest and easiest crystal growing projects there is! All you need is a bit of salt, water, a steel pan, and a stove to produce salt crystal rings, ferns, and other shapes.
Clear or Dyed - Sugar Crystals - Rock Candy
Sugar crystals are also known as rock candy since the crystallized sucrose resembles rock crystals and because you can eat your finished product. You can grow clear sugar crystals with sugar and water or you can add food coloring to get colored crystals. It's simple, safe, and fun.
Emerald Crystal Geode
Grow this crystal geode overnight using plaster for the geode and a non-toxic chemical to make simulated emerald crystals.
Multicolored - Charcoal Crystal Garden
Make delicate, colorful crystals! This is a great classic crystal-growing project. You use charcoal briquettes (or other porous materials), ammonia, salt, bluing, and food coloring to grow a sort of crystal garden.
Multicolored - Magic Rocks - Chemical Garden
Learn about the chemistry behind magic rocks and make your own chemical crystal garden.
Orange - Potassium Dichromate Crystals
Do you want crystals that are naturally bright and colorful? Grow orange crystals of potassium dichromate.
Purple - Chromium Alum Crystals
Learn how to grow purple chromium alum crystals and how to grow clear crystals over a core of colored crystals.
Rainbow Metallic - Bismuth Crystals
Bismuth is one of the easiest and prettiest metal crystals that you can grow yourself. The crystals have an interesting geometric hopper shape and are rainbow-colored from the oxide layer that quickly forms on them. Try these step-by-step instructions for growing bismuth crystals.
Red - Potassium Ferricyanide Crystals
These are instructions for growing easy red monoclinic crystals. Don't let the 'cyanide' part of the chemical name put you off -- these crystals aren't edible, but neither are they more toxic than most other compounds.
Silver - Silver Crystals
All it takes is silver nitrate and either copper wire or mercury to grow these sparkling metal crystals.
Silver - Tin Crystal Growing Instructions
It's easy to grow crystals of tin metal using a simple replacement reaction. You can see the crystals in an hour or so, or leave them overnight for more/larger crystals.
White - Patio Table Crystals
Turn the surface of your glass patio table into a safe place for kids to explore crystals. Here's an easy crystal project you can do on any warm, sunny day using ingredients from your kitchen. You get white crystals as written; use other recipes for other colors.