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Smithsonian® Magic Rocks Kit

Smithsonian® Magic Rocks Kit - image 1 of 2

About this item


  • Instant Crystal® Growing Kit
  • Create a Brilliant Underwater Garden
  • Rocks Grow to Different Heights up to 4 Inches
  • STEM - Science Technology Engineering and Math
Smithsonian Magic Rocks includes: 0.44 oz. (12.4 g) Metallic Salts, 2 x 4.5 fl oz. (133 ml) Sodium Silicate, 1 space background print, 1 sticker sheet, 1 tank and detailed instructions.
Adult supervision required. Conforms to ASTM D-4236
Ages 10+
Manufactured by NSI International, Inc. New York, NY 10010 © and TM 2017 NSI International, Inc., and NSI Products (HK) Limited.
© 2017 Smithsonian Institution® The Smithsonian name and logo are registered trademarks of the Smithsonian Institution.
Contains: Does not contain any of the 8 major allergens
Suggested Age: 10 Years and Up
Material: Paper, plastic
Includes: Rocks, stickers, instruction guide
Features: Reusable, sand
Grade Level: 4th Grade
Number of Players: 1 Player
Educational Focus: Math, Science, engineering, technology
Power Source: Non-powered
TCIN: 51308939
UPC: 042409518816
Item Number (DPCI): 086-00-2411
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Most recent reviews

Cool to see grow

4 out of 5 stars
shannonk 11 days ago
I got this for my 8 year old who likes the science experiments. I read the directions several times and felt confidant so we set it up in the bathroom where it had a sturdy surface and was away from her 3 year sister (who could look but wasn't temped to touch). From the directions it basically tel...see moreof the reviewer's review
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Great project for a kid

(would recommend)
5 out of 5 stars
ScienceAuntie 19 days ago
My nephew had a great time doing this science project. We just wish the crystals would have grown as large as the picture shown on the box.see moreof the reviewer's review
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(would not recommend)
1 out of 5 stars
Av 4 months ago
verified purchaser
Did not work well. When you dump out the water all of the thin strands break
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Cool Gift for

(would recommend)
5 out of 5 stars
Blue Hawaii 6 months ago
verified purchaser
Purchased this item as a gift for a friend’s daughter... hoping it worked perfectly and she got some cool rocks... not sure though I will have to find out!
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(would recommend)
5 out of 5 stars
Brooke 10 months ago
verified purchaser
Such a fun gift for my 8 year old
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5 out of 5 stars
Mimi 1 year ago
verified purchaser
I looked all over for this product. And of course Target didn't let me down. Thrilled to find in time for xmas for my grandson. He will be amazed with these majic rocks.
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