NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit - 1 Lb. Gemstone Mix of 9 Varieties including Tiger's Eye, Amethyst and Quartz - Comes with 4 grades of Polishing Grit, Jewelry Fastenings, Learning Guide

This was a replacement pack for additional rocks found at a gem mine. Kids loved the first rock tumbler and watching the process . The finished product was great. Would order again. Easy for kids to use.

My daughter loves rocks. We got her a rock tumbler and made sure she had this refill to go along with it. Instructions are clear. The rocks included polish beautifully. There are a variety of shapes and colors to excite her. I’m happy with this purchase.

I purchased this kit for a different brand of rock tumbler and I am currently still in the tumbling process. When I opened the box I was shocked by two things. First, I received higher quality stones than expected. Even in their rough states, I could tell that they would all turn out beautiful. This kit includes the most amazing stones any hobbyist could ever want. Also, there were twice as many stones as could fit in my brand of tumbler, so I got a two-for-one bonus by accident. My expectations were exceeded. I assumed the kit would include a few small okay-looking stones and the rest would be disappointing. Not so! The manufacturers include huge, beautiful stones in this kit. I've used another kit that included really lackluster and not-so-pretty stones, but the quality of this product blew my mind. I expected half as many stones, each at half the size, and maybe altogether the stones would be pretty lame. Maybe a few would be pretty. Even though I'm far from done tumbling this kit, I can already tell that my stones will all be beautiful. This kit is the one to buy, even if your tumbler is of a different brand. That said, the other thing I noticed is that the kit does not include any instructions, which can be troublesome for those like me who purchase this kit for another brand of tumbler. Not a problem, though, as a quick Google search and my own judgement of the stones after each cycle will be sufficient to get the results I desire. It's the nature of the craft, anyway. More of an art than a science, as no two stones will ever be alike. I will definitely purchase this again! (Note: pictures included in review depict half of the stones in the kit prior to tumbling, and the other half of the stones after the first grit cycle.)

A good assortment of rocks that start with and for practice.

Bought for my niece 2 years in a row now. She loves her tumbler.

My granddaughter loved these gems. She is really onto rocks and gems. They shined right up in her rock tumbler and she was thrilled.

It was as advertised.

The rocks are good quality and I really enjoy tumbling them. They are good for beginners

I got gud amount of stones and very satisfied with this product.happy with delivery time also fast delivery.i will purchase more in future.thank u.

Purchased this with the matching rock tumbler, it was a huge hit with my son, absolutely loves it. Wish I had found this years ago.

There was one or two decent pieces in this and overall not extremely bad but again with Nat Geo I always get a lot of small broken bits that will tumbled away to nothing. Pretty much what I was expecting from Nat Geo

Alles super, so wie vorgestellt! Was mir fehlt ist ein Hinweis, woher ich die Schleifmittel bekommen kann. Hans

These stones polished up nice and it was great seeing them all the stages of tumbling. Recommend for all ages.