Grow two massive crystals with the National Geographic Giant Crystal Growing Lab! These crystals are three times larger than our standard crystals and grow fully in just a few days. Your kids will be astounded as they watch these crystals take shape and will learn the science behind crystal formation in our detailed, full-color learning guide. This kit also includes a magnifying glass and a real crystal specimen.

• Everything you need to grow a giant blue and purple crystal!

• Simply mix crystal-growing powder with hot water, add the seed rock, and watch as your crystals grow in just a few days.

• A detailed learning guide provides insight into the science of crystal growth.

• A real crystal specimen is included.