10 Best Rock Tumbler For Beginners of December 2025

• MAKE ANY STONE SPARKLE - Polish everyday rocks into dazzling gemstones
• ENHANCE YOUR ROCK COLLECTION - Or start a new one! Makes all rocks shine like professionally polished stones
• EVERYTHING IS INCLUDED - This kit includes the tumbler, four polishing grits, sifter, learning guide PLUS nine types of real rough gemstones
• EASY TO USE - Simple instructions, one-touch settings and an automatic shutoff timer
• SATISFACTION GUARANTEE - For 131 years, National Geographic has been committed to providing fun and fascinating educational opportunities for children and stands behind this Rock Tumbler with a two-year warranty

NATIONAL GEOGRAPHIC

• Gemstones of nine varieties: tiger's eye, amethyst, Aventurine, rose quartz, red jasper, agate, Sodalite, Dalmatian jasper, hematite. (3lb in total)
• Four grades of grit: Coarse, medium, fine, polish. Transform your stones from rough rocks to dazzling gemstones!
• Jewelry fastenings: 1 necklace, 1 set of earrings, 1 keychain, 1 ring. Create custom jewelry from your newly polished gemstones!
• Learning guide: our learning guide will teach you all about these unique gemstone specimens and includes many amazing and fascinating facts
• Respected quality - National Geographic is proud to provide only the highest quality toys and all our kits are backed by our 100% satisfaction guarantee

NATIONAL GEOGRAPHIC

• Gemstones of nine varieties: tiger's eye, amethyst, Aventurine, rose quartz, red jasper, agate, Sodalite, Dalmatian jasper, hematite. (1lb in total)
• Four grades of grit: Coarse, medium, fine, polish. Transform your stones from rough rocks to dazzling gemstones!
• Jewelry fastenings: 1 necklace, 1 set of earrings, 1 keychain, 1 ring. Create custom jewelry from your newly polished gemstones!
• Learning guide: our learning guide will teach you all about these unique gemstone specimens and includes many amazing and fascinating facts
• Respected quality - NATIONAL GEOGRAPHIC is proud to provide only the highest quality toys and all our kits are backed by our 100% satisfaction guarantee

NATIONAL GEOGRAPHIC

• With the Rock Tumbler Gemstone Jewelery Maker you can change rough rocks into jewelry!
• Transforms rough rocks and minerals into smooth, shiny gemstones.
• Product includes: 4 oz gem stone, 1 bag of 1 course-Grind Powder, 1 bag of 2 Fine-Grind Powder, 1 bag of 3 Polishing Powder, 1 bag of 4 Final Polishing Powder, glue Metal Jewelry Accessories, UL Adaptor (no batteries required)
• AC adapter included, requires no batteries!
• Assorted colors, either blue or black. Ages 8 & up.

Science Tech

• POLISH ROCKS AT HOME - Discover the fun hobby of rock tumbling and transform rough rocks into beautiful gems with this deluxe rock tumbler
• COMPLETE ROCK TUMBLING KIT - Includes 1lb of tumbling stones (9 types), polishing grit (4 types), jewelry fastenings, and instructions
• ULTIMATE TUMBLING MACHINE - Featuring a long-lasting motor, automatic shutoff timer, leak-proof rubber barrel for quieter tumbling, and speed control settings
• START A ROCK COLLECTION - Spark a child's love of geology and learning with this hands-on earth science kit. Turn any stone into a shiny treasure!
• 100% SATISFACTION GUARANTEE - Join the millions of parents who have chosen our award-winning science toys and experience the Discover with Dr. Cool difference! Includes 2 year manufacturer warranty.

Discover with Dr. Cool

• Make any stone sparkle and polish everyday rocks into dazzling gemstones
• Enhance your rock collection or start a new one! Makes all rocks shine like professionally polished stones
• Everything is included in the kit: tumbler, four polishing grits, sifter, learning guide, rough gemstones plus two refill packs of rough and Jasper gemstones
• Easy to use with our simple instructions, one-touch settings and an automatic shutoff timer
• 100% satisfaction guaranteed - for 130 years, National Geographic has been committed to encouraging young scientists and stands behind this Rock tumbler with a two-year warranty.

NATIONAL GEOGRAPHIC

• HIGH QUALITY – This rock polisher grit refill pack comes with enough high-quality silicon carbide grit to put a dazzling polish on approximately 8-10 lbs. of rocks, gems, glass, and more
• EASY TO USE FOUR-STAGE ROCK GRIT - The first rock tumbling grit stage provides initial shaping, the second smooths rock surfaces, the third pre-polishes rocks, and the fourth provides the final polish
• COMPATIBLE WITH ALL TUMBLERS - This complete 4-step rock tumbler grit refill kit works with all rock tumblers. For best results, use with National Geographic Rock Tumblers and rock tumbling supplies
• EASY TO MEASURE AND STORE - Each rock tumbling grit stage is packaged in a wide-mouth container with secure, screw-top closure
• SATISFACTION GUARANTEED – The National Geographic STEM series provides high-quality products that are a whole lot of fun! If your experience is anything less than extraordinary, let us know so we can make it right for you

NATIONAL GEOGRAPHIC

• 💎 TURN ROUGH ROCKS INTO POLISHED GEMS: Discover and learn the fun process of rock tumbling with the Advanced Rock Tumbler. Pour in the rough stones and grit and let the machine do its job.
• 🔧 COMPLETE KIT: Includes: rock tumbler machine, low-noise barrel (1 lb. capacity), 4 grit packets, 1/2 lb. assorted rough rocks, mesh strainer, jewelry fasteners, gem storage bag, and an illustrated easy-to-follow instruction and learning guide.
• ⚡ POWERFUL QUALITY: Runs on a powerful heavy duty motor that will last for a very long time, and includes a leak-resistant barrel that runs quieter than the other brands.
• ⚙️ ADVANCED FEATURES: Includes speed controls (providing more granular tumbling results), a 9-day timer (shuts off automatically when you desire), all displayed on beautiful LCD screens.
• 🎁 A FUN AND EDUCATIONAL GIFT FOR ALL AGES: It's not often that a science project can be fun and engaging, but this kit achieves both! It fascinates children and adults as soon as they pull it out of the box and is a perfect STEM project for any age. It fosters a love for science, geology and mineralogy in a fun and exciting way.

Dan&Darci

• MAKE ANY STONE SPARKLE and polish everyday rocks into dazzling gemstones
• ENHANCE YOUR ROCK COLLECTION or start a new one! Makes all rocks shine like professionally polished stones
• EVERYTHING IS INCLUDED in the kit; tumbler, four polishing grits, a sifter, jewelry settings, a full-color 8 page learning guide and nine types of REAL rough gemstones
• EASY TO USE for Rock Hounds of all ages and skill levels; plug it in and polishing begins
• 100% SATISFACTION GUARANTEED - For 129 years, National Geographic has been committed to providing fun and fascinating educational opportunities for children and stands behind this Rock Tumbler with a two-year warranty

NATIONAL GEOGRAPHIC

• Polishes stones, glass and metals. Excellent choice for tumbling larger quantities at once.
• 4-step polishing kit includes pre-measured rock, grit and polish. Makes a great starter kit for beginners.
• Includes one 4lb. capacity rubber barrel, oil, Allen wrench, and complete written and visual instructions.
• Powerful 115V fan-cooled AC motor with thermal overload protector. Designed to tumble 24/7.
• Rust-proof housing with no sharp edges. Lighted on/off power switch. Very easy to use.

Tumble-Bee