Products tagged with crystal

Grow sparkling, blue crystals overnight from a safe solution of potassium aluminum sulfate. Single out the largest crystal shard, redissolve the remaining crystals and repeat the crystal formation process to grow a larger more striking crystal. These kits

With this activity-packed kit, budding gemologists can grow crystals to make 2 cool necklaces and 1 jumbo geode ring. They will learn about crystallization, crystal growth, geode identification and more! Includes instructions and lab station with everythi