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Bright Green Crystal Seashell Experiment

A sensory-rich experiment for growing crystals on seashells that promotes calm and mindfulness.
Print Recipe
Prep Time 15 minutes
Total Time 5 days
Servings: 1 decorated shell
Course: DIY Experiment
Cuisine: DIY Experiment
Ingredients Method Notes

Ingredients
  

  • Clean seashells washed and dried
  • 2 to 3 tablespoons granulated sugar
  • Pinch of table salt or Epsom salt optional
  • 1 teaspoon alum or magnesium sulfate optional
  • 1 cup warm water
  • 3 to 5 drops bright green food coloring
  • Small glass or ceramic shallow dish
  • Wooden stirring stick or spoon
  • Soft cloth or paper towels
  • Tweezers or small brush optional
  • Gloves and eye protection optional
  • A label or small note to date your experiment

Method
 

  1. Prepare a calm workspace with a soft cloth and shallow dish.
  2. Heat 1 cup of warm water in a saucepan until comfortably warm.
  3. Stir in 2 to 3 tablespoons of sugar until dissolved.
  4. Add a pinch of salt if desired, and stir gently.
  5. Dissolve 1 teaspoon of alum or magnesium sulfate if using.
  6. Add 3 to 5 drops of bright green food coloring.
  7. Place the cleaned shell in the shallow dish and spoon the warm solution over it.
  8. Cover the dish loosely with a paper towel to allow evaporation.
  9. Check the shell daily to observe crystal growth and take notes.
  10. Gently pour off excess solution when satisfied with growth and allow to dry.

Notes

Use baking sugar in place of any specialty sugar. Crystals may still form without alum but will be softer. Store completed shells out of sunlight to prevent fading.