The Thames & Kosmos Rock Tumbler

Regular price $5999

Description

Let’s rock and roll! Amp up your rock collection and explore the secrets of geology with the Thames & Kosmos Rock Tumbler! This custom-designed, user-friendly machine allows budding geologists and gem collectors to transform rough stones into beautiful polished rocks while exploring topics like erosion, weathering, and the geological rock cycle.
The kit comes with an assortment of natural rock samples to get you started — including tiger’s eye, aventurine, rose quartz, and more — as well as four polishing grits. Use the included jewelry settings to create accessories from your specimens. The powerful, long-lasting motor is built with durability in mind: once you’ve polished the included rocks, you can continue your experiments by tumbling rocks, glass, wood, and other materials you collect on your own. The leak-proof, noise-reducing barrel and built-in timer also aid in ease of use.
The included manual and poster guide children on their rock-polishing adventures, providing usage instructions as well as scientific information about different types of rocks, how they are formed, and more.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

  • Made for Play

    Toys and games that will run on repeat

  • Gifting Made Easy

    We did the research so you don't have to

  • Inspired by Adventure

    And Trending in 2026

Frequently Asked Questions

📦 Shipping

What countries do you ship to?

We currently ship to the United States only. To inquire about shipping to a different destination, please contact us.

How long will it take to receive my order?

As a small shop, we personally prepare each order! Please allow 2 business days for processing, then 5-7 business days for shipping to your location. Thank you for supporting small businesses!

🏷️ Returns and Refunds

How do I return a product?

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. 

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at info@eftoyshoppe.com.

How long will it take to receive my refund?

We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund, too.

If more than 15 business days have passed since we’ve approved your return, please contact us at info@eftoyshoppe.com.