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Blue Marble

National Geographic Premium Polished Stones - 2 Pounds of 3/4-Inch Tumbled Stones and Crystals Bulk, 4500+ Carats, Gemstones for Kids, Rock and Mineral Kit, STEM Toys

  • Based on 1,176 reviews
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$21.99 Why this price?
Memorial Day Sale · 33% off was $32.99

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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, May 28
Order within 11 hours and 47 minutes
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Style: 2 lb, 3/4-Inch Stones


Features

  • The Ultimate rock collection kit! This STEM science kit lets kids explore 2 pounds of magnificent geological specimens! These include agate, amethyst, blue quartz, rose quartz, tiger's eye, sodalite, hematite, various jasper varieties, and more!
  • Polished gems reveal hidden beauty! This collection of stones and crystals is dazzling! The polished luster of the rocks and crystals in this kit make it possible to see minute details, revealing the hidden beauty of each rock and crystal inside!
  • Great home decor and craft accessories. These rocks and crystals have many uses! They make great aquarium rocks, and are also good for plant and candle arrangements. Use them as gemstone home decor or with a jewelry making kit! The possibilities are endless!
  • Learning guide and ID sheet included. The learning guide and ID sheet in this set provide a deeper look into each rock and crystal. They're great for kids learning about geology and for adults who desire additional insight into their new stones!
  • AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!

Brand Name: Blue Marble


Age Range Description: 8 years and up


Educational Objective: STEM


Sub Brand: National Geographic


Set Name: National Geographic Premium Polished Stones


Manufacturer Maximum Age (MONTHS): 1188.0


UPC: 816448029516


Manufacturer Minimum Age (MONTHS): 96


Model Number: NG34PROCK2LB


Manufacturer Part Number: NG34PROCK2LB


Manufacturer: JMW Sales, Inc.


Item Type Name: Premium Polished Stones and Crystals


Unit Count: 2 Count


Manufacturer Warranty Description: We're proud to make the highest quality products which are backed by exceptional service.


Included Components: 1 Learning Guide, 5 Full-Color Identification Sheet, Premium Polished Stones


Theme: Geology


Is Assembly Required: No


Material Type: stones and crystals


Size: One Size


Item Dimensions: 9.21 x 2.2 x 6.1 inches


Item Weight: 2.28 Pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great gift
Style: 2 lb, 3/4-Inch Stones
These were a gift for my grandson; a nice and colorful assortment of rocks.
Reviewed in the United States on October 25, 2025 by Colorado Dad
    • Worthwhile purchase
Style: 2 lb, 3/4-Inch Stones
The stones are good sized and mostly tumbled. Smooth to the touch with good color. This box had more examples of quartz and tiger eye than some other stones. But overall a good variety to be had.
Reviewed in the United States on January 21, 2026 by Carolyn Hettell
    • A Rainey Day Activity
Style: 2 lb, 3/4-Inch Stones
Nice selection of gem stones. I bought this set for my nieces as they are interested in looking for "pretty" stones. They spent a full afternoon sorting through and reading about each one. Very educational, I would recommend this as a rainey day activity.
Reviewed in the United States on August 14, 2025 by TLW
    • Good value overall
Style: 2 lb, 3/4-Inch Stones
Review Image by Andrei Balmos
Review Image by Andrei Balmos
Review Image by Andrei Balmos
Good value overall, some generic stones in there, good polish on most
Reviewed in the United States on July 17, 2025 by Andrei Balmos
    • Seems to be a good product
Style: 2 lb, 3/4-Inch Stones
The box looks exactly as pictured. I just hope it says good as it seems inside the box.
Reviewed in the United States on December 3, 2025 by pascal tarantino
    • Great quality
Style: 5 lb, 3/4-Inch Stones
Bought these for my son, he loves them. It comes with a large variety of colors and sizes.
Reviewed in the United States on November 10, 2025 by B
    • Very Beautiful!
Style: 2 lb, 3/4-Inch Stones
Very beautiful! Not what I thought I was getting but they are incredibly beautiful no matter what
Reviewed in the United States on April 26, 2025 by Sebastian Copp
    • Good value, very entertaining
Style: 2 lb, 3/4-Inch Stones
I have a six-year-old and a three year-old, they both loved this. I have to warn you, it gets really messy so make sure to lay some cardboard or a sheet or some newspaper down underneath. This is now a go to for birthday gifts and I plan on doing this as an activity for my kids at the next birthday party for my kids. Also, make sure you have a spray bottle handy so you’re not there for an hour. You just keep saturating the clay and it will degrade so they can get to the gemstones faster. ... show more
Reviewed in the United States on February 4, 2025 by Ryan Steeves

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