Rock Tumbler Refill Pack - Gemstones

We’ve scoured the globe and collected the best raw gemstones for rock tumbling! This rock tumbler refill kit includes: The ultimate variety with 9 types of raw gemstones (1 lb in total) 4 courses of premium polishing grit that will turn your “stones” into “gemstones” Jewelry fastenings: 2 necklace, 2 earring, 1 keychain, 1 ring Discover with Dr. Cool’s education adventure guide written by teachers Boys and girls will love witnessing the incredible transformation of these gemstones and adding them to their rock collection!