Create your very own magical crystal unicorn world with 4M Crystal Growing - Magical Crystal Terrarium. The kit includes 2 unicorn toys and a transparent unicorn sticker which can be added to the terrarium to make it a unicorn paradise. Instructions are included and will guide the kids to create a magical Unicorn Terrarium and they can grow 4 colorful crystals. Kids can watch their crystals grow like magic over 4-7 days. It is a wonderful creative product for kids who love science and unicorns.