Add some sparkle to Easter with a crystal chemistry experiment! Discover how to make your own crystal eggshell geodes below. What you need: - Borax - Glue - Hot water - 2 heat-proof cups - Eggs - Food coloring How to grow eggshell crystals: 1. Make a borax solution by pouring boiling water into a heat-safe cup and adding borax until it stops dissolving. Pour the solution into another heat-safe cup, leaving the extra borax behind, and let cool. 2. Prepare eggshells by cracking open the top and removing the egg. 3. Brush glue inside the eggshell and sprinkle borax on top. Pour out any excess and let dry. 4. Fill a cup with the borax solution and add a few drops of food coloring, making sure you have enough solution to fully submerge the eggshell. 5. Place your eggshells in a narrow cup to hold them upright. 6. Once the glue has dried and the solution has reached room temperature, pour the solution into the eggshell. Leave overnight or until your crystals have reached your desired size...