NATIONAL GEOGRAPHIC Rock Tumbler Mega Refill Kit - 3lbs Gemstones of 9 Varieties Including Tiger's Eye, Amethyst & Quartz - 4 Grades of Grit, Jewelry Fastenings & Detailed Learning Guide

After using the grit that came with these rocks, I did a few batches and found that, although the rocks were smooth, they were not The mineral oil (baby oil) I used did not do the trick. In step 4, I used Aluminum Oxide from another kit, and it was a game changer. In these pictures, rocks on the left are finished with the original grit and rocks on the right are finished with aluminum oxide in step 4 as well. As you can see, my amethyst is clearer on the right and the rocks to the left have a matte finish. The rocks to the right still have that "wet look" and reflect the light.

Kailani Booth

| Apr 02, 2021

It was awesome to see the rocks we made, but they didn't shine. I just did some research and it turns out you need a different powder for Step 4. I found some aluminum oxide on Amazon for a very low price in a refill kit and it solved the problem easily. I still really like the tumbler.

Everlee Casey

| Jul 01, 2021

My land provides me with many rocks and pebbles, so I started picking them up and letting them tumble. There were some that were fun and cool looking, some of them just looked like My purchase of this refill is a fantastic find, all the gems and stones are excellent. Any type of stone, such as hematite, jasper or rose There are three items included in this kit We have piled up one pound bags of stones and gems, as well as each of the four In addition to an identification booklet, there is a concise instruction manual. The process seems to be pretty straightforward. We provided one package of grit and one package of rocks. We'll need 2 bags of rocks and 2 bags of grit, according to the instructions. It was cool seeing the stones in rough form, but I cannot wait for them to be buffed. The kit is compatible with any tumbler, no matter how big or small.

Kai Krause

| Jul 10, 2021

The gift is for one of my granddaughters who is a year older than me. Cheap ones were available, but I decided to go with the heavier one after considering the alternatives. I have seen a more expensive one that works just as well. Everything turned out great with the rocks! It has been found to be a fun place for her to spend many hours with her rock polisher after I ordered extra sand and rocks. My plan is to help her make jewelry from some of her favorite rocks when she visits me.

George Lindsey

| Mar 12, 2021

My rocks are not cracked or bad, but I have run 3 batches and each time the resulting rocks are small, smooth, and hazy. This is a very disappointing toy considering all the work, the price, and the time involved.

Myles Cardenas

| Oct 30, 2020

The fact that I have always been a rock hound led me to want a tumbler. Thus, I gave myself something I had always wanted as a reward for my raise. However, the rocks aren't very glossy despite the fact that I followed the instructions. After I bought the ceramic filler and silver or ammonia oxide or whatever it was, it still wasn't as shiny as I was hoping. If you want polished shiny rocks, what do you need to do?.

Kali McIntyre

| Sep 09, 2020

I am in love with this product! It is so easy to use and useful The price is well worth it! This product comes with an amazing learning guide and is perfect for kids of all ages We're adults now! I am impressed with this product! This is actually being used for school assignments and assignments for homework as well. It is a perfect gift for friends and family! I think you did a fantastic job. Thanks for all the time and effort you have put into this A lot of work has gone into this product to make it a fun and enjoyable.

Abram Bonner

| Sep 22, 2020

There is a lot of noise, but each puts them in their basements. There is only one downside to a tumbler, the number of days it lasts (7-10 The goal is 9) to achieve Several of the grandkids became antsy while waiting for results, but enjoyed the experience,.

Ibrahim Conrad

| Apr 04, 2021