Shiny Rocks STEM Polisher

Shipping calculated at checkout.
Regular price $83.99 Save Liquid error (snippets/product-form line 69): Computation results in '-Infinity'%
Solar Balloon shipping 5.99 flat rate shipping
Anticipated ship date: 2 - 3 days
30-Day Returns


  • Sparkling stone device
  • Create a gemstone collection
  • Tumbler
  • Four polishing grits
  • Real gemstones

Do you love your gemstone collection, but feel like many of your precious stones could use with some loving? The Shiny Rocks STEM Polisher allows children to buff, polish, and enhance the natural beauty of their prized collection. There is also a good number of gemstones included in this kit, beyond the incredible polishing device. Simply insert your gemstones into the device along with some grits and watch as your babies come back to sparkling life!


  • Product Dimensions: 11 x 7.25 x 9 inches
  • Item Weight: 4 pounds
  • Manufacturer Recommended Age: 8 - 15 years

Our SmartKidsPlanet initiative began in 2017 when 3 geeky and dedicated parents saw a gap in the children’s toys and games market. An opportunity was spotted while we struggled to find toys and games for our kids which enriched their minds and guided them toward science, art, math and construction. The trio then knew that their paths were set, establishing an online shop with a comprehensive range of intelligent toys for babies, children and young teenagers.

With offices based in California, our SmartKidsPlanet team enjoys a daily growth in our presence within the children’s educational toys market. We love our new place in life, and we love helping young minds with their growth and skill development, all while having as much fun as possible.


We ship all our products directly to you from our warehouses located in multiple locations in the West and East Coasts.

Processing Time: All orders placed after 2 PM EST will be shipped the next business day. Orders placed after 2 PM EST Friday will be shipped on Monday. 

Orders are shipped and generally arrive within 2 to 3 business days after the order is processed. Tracking information will be sent via email once your order has been processed. The tracking number may not become active for 24 - 48 hrs.

Kindly take note that due to our business utilizing multiple warehouses within the United States, orders of more than one item may arrive as separate deliveries at different times. 

Orders made to PO BOX may take up to 12 days. Additionally, we do not ship to military bases. Hawaii and Alaska

Customer Reviews

Based on 102 reviews
Lynn R
Great for kids

Going strong tumbling rocks we done 4 batches so far no stoping for about 3 months kids love it

Lora Montgomery
Great gift

My son loved it! He has used it multiple times and has created such lovely stones made a great Christmas gift for any age.

Lin Grant
Easy to use kit

Good little kit - super easy to use, though it does take weeks to actually do the polishing, which I don't remember it indicating anywhere: polishing stones is far from instant! You need to order new packs of grit when you want to do another round of stones. It's fairly quiet while it's doing it's thing, especially if you can close a door on it.

Loretta Volk
I just finished my first batch of scraps that I wanted to look like beach glass

I purchased this to make use of stained glass scraps. I just finished my first batch of scraps that I wanted to look like beach glass. It worked asoundingly well. I am so happy!

Luka Bonnell
Teacher Approved!

I'm a 5th/6th grade special education teacher and my students LOVED using the rock tumbler. It was so helpful in demonstrating weathering and they had something to take home at the end.The only word of caution I have is, it can be a little messy to take the rocks out. Nothing that stained but a little scrubbing required to get the grit out from under fingernails.




You may also like