Crystal growing kits are a fun and educational way to grow beautiful crystals at home. With the right techniques and a bit of patience, these science toys allow you to grow dazzling, vibrant colored crystals that form natural gemstone shapes.
In this beginner’s guide, we will cover everything you need to know about crystal growing kits, from the science behind crystal formation to tips for growing perfect crystals every time. Read on to learn the answers to frequently asked questions so you can have a successful and rewarding experience with your crystal growing kit.
What Exactly Are Crystal Growing Kits?
Crystal growing kits are products that allow you to easily grow crystals at home. They contain all the materials you need, like seed crystals, crystal powder, and a growing chamber. By combining the ingredients and manipulating factors like temperature, you can grow gorgeous, custom-colored crystals in a variety of shapes and sizes.
These science toys have educational benefits that allow kids to learn about chemistry, physics, biology, and more in a hands-on way. They also provide a fun creative outlet and quality family time activity.
While crystal growing was once only done in labs, it is now an engaging hobby anyone can enjoy at home with the right tools.
A Brief History of Crystal Growing Kits
The earliest crystal growing kits appeared in the 1940s and 50s as educational chemistry sets for students. They were produced by companies like Porter Chemical and allowed growing simple crystals like alum and copper sulfate.
In the 1960s and 70s, more advanced crystal growing kits entered the mainstream consumer market. Notable examples include the Atomic Energy Lab which grew nuclear reactor fuel salt crystals, and the Visible Crystals Set which grew brightly colored crystals.
Over the next decades, crystal growing kits continued improving to allow the growth of larger and more complex crystals of minerals like amethyst and quartz.
In the 2000s, major manufacturers like 4M and National Geographic began producing crystal growing kits aimed at educational STEM learning for children.
Today, crystal growing kits use modern materials to simplify the process and grow brilliant custom-colored crystals at home easily.
The Science Behind Growing Crystals
The crystals grown with kits form through a natural process known as crystallization which occurs in two main phases:
Nucleation
This begins when solute molecules suspended in a solvent start aggregating into organized crystal structures called nuclei.
Supersaturation (an excess of solute), temperature changes, and the presence of seed crystals can trigger nucleation.
Growth
Stable nuclei attract free solute molecules that attach in an orderly way, causing the crystal structure to grow larger over time.
Factors like temperature, pressure, and purity of the solution impact the growth process.
Understanding these fundamental concepts allows tweaking factors like temperature and concentration to grow quality crystals reliably.
Types of Crystal Growing Kits
There are many crystal growing kit options on the market that grow various types of crystals. Here are three top picks:
National Geographic Crystal Growing Kit
This popular kit offered by National Geographic grows a rainbow of colors like purple amethyst, blue sapphire, and red rubies. It includes:
- Transparent seed rocks
- Magnifying glass for observation
- 8 growing chambers
- Comprehensive learning guide
It grows vibrant colored crystals in 1-3 weeks and is great for ages 8+. Learn more here.
Seed Rocks Crystal Growing Kit
The Seed Rocks kit grows 6 colors of crystals and includes:
- Display light stand
- Seed rocks
- Wood stirring stick
- Instruction booklet
This kit grows special light-up crystals in 1-2 weeks. Perfect for ages 6+ to enjoy the magic of crystal creation. Get it here.
Custom-Colored Crystal Growing Kit
Educational Innovations’ customizable kit allows mixing any colors. Features:
- Plastic growing chambers
- Assorted dye powders
- Pipettes
- Illustrated guide
Grow unique color combinations like blueberry crystals or mint crystals in 2 weeks. Great for young scientists ages 5+.
How to Use a Crystal Growing Kit
Follow this simple step-by-step guide to grow stunning crystals successfully:
Materials Needed
- Crystal growing kit
- Distilled water
- Measuring cup
- Wooden spoon for mixing
Optional:
- Food coloring (for custom colors)
- Isopropyl alcohol (to re-grow crystals)
Preparation
- Read kit instructions fully.
- Wash hands and the work area thoroughly.
- Assemble materials and tools.
Mixing the Solution
- Boil distilled water. Let cool slightly.
- Pour boiled water into the growing chamber(s).
- Add the powder slowly, mixing to dissolve.
- Optional: Add drops of food coloring and mix.
Seeding the Crystals
- Use tweezers to place seed rocks in the solution.
- Space seeds evenly, keeping them fully submerged.
Growing the Crystals
- Cover the chamber to prevent evaporation.
- Place in a warm area out of direct sunlight.
- Allow crystals to grow undisturbed for 1-3 weeks.
Harvesting Crystals
- Remove crystals gently using tweezers.
- Rinse uncolored crystals in lukewarm water.
- Display crystals on an included stand or in a glass jar.
Tips for Growing Quality Crystals
Follow these tips to improve crystal size, clarity, and color:
- Maintain proper temperature around 70-75°F.
- Avoid light exposure to prevent algae growth.
- Gently stir the solution once a day.
- Position seeds evenly apart near the bottom.
- Use distilled water for purity.
Be patient – some crystals may take 2-3 weeks to fully form!
Benefits of Crystal Growing Kits
Beyond just being fun, crystal growing kits provide many benefits:
Educational Benefits
Crystal growing allows hands-on learning about:
- Chemistry – solutions, crystallization
- Physics – molecular structure, supersaturation
- Earth science – gemstones, minerals
- Biology – molecules, chemicals
Kits promote problem solving, observation, and STEM skills.
Personal Benefits
- Relaxing, meditative hobby
- Creative self-expression through color
- Quality family time
- Sense of wonder and accomplishment
Are Crystal Growing Kits Safe?
Most kits are designed to be safe, but take these precautions:
Safety Gear
- Wear eye protection
- Use gloves during preparation
- Work in a well-ventilated area
First Aid
If any solutions contact eyes or skin, rinse immediately with plenty of water. Seek medical attention for accidental ingestion.
Overall, exercise common sense and follow instructions carefully. Supervise children for the safest enjoyment.
Top Crystal Growing Kit Reviews
See the highest-rated and most recommended crystal growing kits:
National Geographic Crystal Growing Kit
“My daughters loved this kit! The crystals grew beautifully in about 2 weeks. Now they have a nice collection of colored crystals to display. Great educational hands-on science.”
5/5 stars on Amazon
Seed Rocks Crystal Growing Kit
“I bought this for my son’s 8th birthday party and all the kids were amazed. The light-up base for displaying the crystals is so cool. We will definitely buy this brand again.”
4.8/5 stars on Amazon
Custom Crystal Growing Kit
“I teach middle school science and wanted a kit that allowed flexibility with crystal colors. This kit works perfectly and comes with an excellent guidebook. My students learned so much and were blown away when their custom crystals formed.”
4.7/5 stars on Amazon
Grow Dazzling Crystals with Ease
Crystal growing kits make it easy and fun to grow gorgeous, vibrant colored crystals at home through the power of science.
With a quality kit, proper techniques, and a bit of patience, you can grow picture-perfect crystals to delight kids and adults alike.
Understanding the principles behind crystal formation allows tweaking conditions for optimum results. Follow activity guides and safety tips to ensure successful, educational, and safe crystal-growing experience.
The wonders of Earth’s natural processes are illuminating when seen firsthand. Grab a kit today and enjoy the magic, beauty, and science of growing your own crystals!
Frequently Asked Questions
What age is appropriate for crystal growing kits?
Most kits are safe for children ages 5 and up with adult supervision. Look for age ranges listed on kit labels.
How long does crystal formation take?
Crystals usually take 1-3 weeks to fully form, with some types taking up to a month.
What types of crystals can be grown?
Common crystals grown are table salt, alum, copper sulfate, borax, and sodium thiosulfate. Kits may grow quartz, amethyst, calcite, and more.
Can crystals be regrown after harvesting?
Yes, pour the leftover solution into a jar and add a few new seed crystals to grow more. Use isopropyl alcohol to dissolve old crystals off seeds.
How many crystals will grow in one kit?
The number varies, but most kits will yield 5-20 harvestable crystals depending on number of chambers.
How can I display my finished crystals?
Most kits come with a display stand or you can place crystals in a glass jar or clear vase. Use putty to hold oddly shaped crystals. Create labels with crystal type and color.
What other tools do I need?
Basic supplies include distilled water, a wooden spoon, plastic/glass containers, food coloring (optional), and tweezers for handling crystals. Wear goggles for safety.