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Description
National Geographic Crystals, Rocks, and MineralsNational Geographic Crystals, Rocks, and Minerals; Earth Science Experiment Kit. Learn about rocks and the minerals that form them. Dig deeper and discover the fascinating crystal structures of these minerals. Much more than just a crystal growing kit, this experiment kit teaches you the chemistry of crystals and the geological science behind rock formation with more than 18 hands on projects and investigations. Grow three chemically different types
National Geographic Crystals, Rocks, and Minerals; Earth Science Experiment Kit. Learn about rocks and the minerals that form them. Dig deeper and discover the fascinating crystal structures of these minerals. Much more than just a crystal growing kit, this experiment kit teaches you the chemistry of crystals and the geological science behind rock formation with more than 18 hands-on projects and investigations. Grow three chemically different types of crystals that exhibit not only different colors, but also different shapes. Build three-dimensional geometric models of common crystal shapes including octahedrons, tetrahedrons, and rhomboids. Mold your own crystal geode - a hollow rock with crystals growing inside. Learn how to test and identify minerals with your very own collection of real specimens included in the kit. Conduct tests to determine a mineral's chemical and physical properties such as color, luster, streak color, hardness, density, magnetic properties, and carbon, sulfur, or iron content. Investigate the geologic rock cycle and learn how the three main categories of rock - igneous, sedimentary, and metamorphic - are formed, altered, destroyed, and formed again. Full-color, 32-page experiment manual. Recoomended Ages 10 and upShipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
What a great find!
These are pretty slick! I’m 72 yo female with that “sort of” yellow tint to my teeth (see what y’all get to look forward to?). I have porcelain crowns from canines on back, so canines to incisors are my natural teeth. Didn’t want to do the Opalescence crap, and decided on these Crest strips as I like their products. Great find! They work like a charm to whiten and got rid of the yellow tint after 3 applications. Easy peasy to use, no bad taste at all, and no sensitivity to my gums. And now my natural teeth match the crowns 😁 Highly recommend them!
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Reviewed in the United States on January 9, 2026
★★★★★ 5
Effective Whitening
I’ve used these white-strips before. They are easy to use and have good results with a natural look.
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Reviewed in the United States on April 30, 2026
★★★★★ 4
Really works
Really good. Works great. Noticed whiter teeth within a few uses.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
A Working Set Of Strips
This is not expensive. It does whiten your teeth. I don't see the 3d effect. You get some strips. 2 Types. This box will last you some time. If you want white teeth then this can help make it happen. This weirdly caused me pain the last few times I used them. Outside of this no issue with them. They come on and off no problem. I kinda recommend this. Just be careful.
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Reviewed in the United States on January 25, 2026
★★★★★ 5
Great value purchase
I wanted to get my teeth professionally whitened and have never done stripes before, but the professional whitening was quoted at $700 so I thought this would be a good start instead. I have done them a few times and the teeth get sensitive the next day but thats to be expected and no more than usual, then goes back to normal. I haven't done a ton but have noticed a difference already and plan to continue doing them!
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Reviewed in the United States on March 31, 2026