Space Age Crystal Growing Kit with LED Base (Citrine) Delight and amaze with the Deluxe Space Age Crystal Growing Kit with LED Base (Citrine). Prep the growing solution and watch as dazzling quartz crystals begin to bloom. For detailed instructions, please refer to the included booklet. Turn the incubator to see the crystal dissolve, then repeat to re-grow once more. Learn how and why astronauts grow crystals in the weightlessness of space. Each kit contains multi-color LED base, crystal-growing chemicals, crystal-growing container and lid, stirring rod, and a 48-page booklet. For ages 12 and up.