Smithsonian Magic Rocks Set
Spot on Value!
Create a brilliant underwater garden with the Smithsonian Magic Rocks Set! Instant crystal growing materials will help your rocks grow to different heights, of up to four inches!
- Includes metallic slats, sodium silicate, 1 space aground print, 1 sticker sheet, 1 tank and detailed instructions
- Contains chemicals that may be harmful if mis-used. Read cautions on individual containers carefully
- Plastic / metallic salts / sodium silicate
- Ages 10 and up
- Adult supervision required