Crystal Growing Lab
Nurture geometric crystals from salt, sugar, borax, and minerals.
Grow stunning crystals at home through controlled supersaturation and evaporation. Start with easy salt or sugar crystals, then progress to borax, Epsom salt, and mineral solutions. Document growth rates, measure angles, and classify crystal systems by shape. Watch chemistry in slow motion as atoms arrange into perfect geometric patterns. Turn your kitchen into a mineralogy lab where patience creates beauty and science merges with art.
How to start
- 1Dissolve salt or sugar in boiling water until supersaturated
- 2Pour into a clean jar and let cool undisturbed
- 3Suspend a seed crystal or string in the solution
- 4Watch daily as crystals grow over 1-3 weeks
- 5Measure growth, photograph angles, and classify crystal shapes
- 6Dry and preserve your specimens in a display cabinet
What you'll need
- Glass Jars or BeakersEssential~$5
- Boiling Water and Heat SourceEssentialFree
- Salt, Sugar, or BoraxEssential~$5
- String or Seed CrystalsEssential~$2
- Ruler and ProtractorNice to have~$3
- Magnifying GlassNice to have~$8
Where to learn more
Plot twists
Ways to spice this up when the basics get boring.
- Grow colored crystals by adding food dye
- Race different solutions to see which crystallizes fastest
- Create crystal geodes in eggshells
The largest natural crystal ever found was a selenite crystal in Mexico's Naica Cave that was 39 feet long—salt crystals form the same way as your lab crystals, just over millions of years.
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