






💎 Elevate your hobby: polish, learn, and shine like never before!
The Blue Marble National Geographic Rock Tumbler Starter Kit (2016) is a beginner-friendly, all-inclusive rock polishing set designed for ages 8 and up. Featuring a reliable motor and leak-proof rubber-lined barrel, it transforms half a pound of 9 real rough gemstones into polished treasures using four stages of grit. The kit also includes jewelry fastenings and an educational guide, making it a perfect STEM toy that blends hands-on creativity with scientific learning.




| ASIN | B01I56RV0C |
| Age Range (Description) | 8 years and up |
| Age Range Description | 8 years and up |
| Best Sellers Rank | #147,298 in Toys & Games ( See Top 100 in Toys & Games ) #4,060 in Science Toys & Kits |
| Brand | Blue Marble |
| Country of Origin | USA |
| Customer Reviews | 4.3 out of 5 stars 10,636 Reviews |
| Educational Objective | STEM |
| Global Trade Identification Number | 00816448020391 |
| Included Components | 5 Jewelry Fastenings, Leak-proof, rubber-lined tumbler barrel, Rock Tumbler, ½ pound of stones and four levels of grit |
| Item Dimensions | 27.9 x 13.2 x 30.5 Centimeters |
| Item Height | 30.48 Centimeters |
| Item Type Name | Beginner's Rock Tumbler |
| Item Weight | 1.9 Kilograms |
| Item dimensions L x W x H | 27.9 x 13.2 x 30.5 Centimeters |
| Manufacturer | Discover with Dr. Cool |
| Manufacturer Warranty Description | 30 day warranty against manufacturer defects |
| Minimum Recommended age | 96.0 |
| Size | 1 Count (Pack of 1) |
| UPC | 816448020391 |
| Unit Count | 1 Count |
S**A
Doesn't close after first time.
Doesn't close after first time. Too much Waste of money. Rubber gets loose tooo. Thats enough review for the first time
Trustpilot
5 days ago
3 weeks ago