Often sold in kits (like "Magic Tree" or "Crystal Growing" kits), this chemical produces the most dramatic results.

If your solution cools down too fast, you’ll get millions of tiny, sandy crystals. If you wrap your jar in a towel to slow down the cooling process, you’ll get fewer, but much larger, impressive facets.

Once your crystals are dry, the possibilities are endless. You can coat them in a clear nail polish or spray sealant to protect them from humidity. Use them as , wire-wrap them into handmade pendants , or glue them inside hollowed-out eggshells to create DIY geodes .