National Geographic Starter Rock Tumbler Kit - Includes Rough Gemstones, 4-Stage Silicon Carbide Polishing Grit, Jewellery Fastenings & Learning Guide - STEM Science Kit for Geology Enthusiasts

National Geographic · Starter Rock Tumbler The trusted name in science kits, in starter form. A National Geographic rock tumbler built for first-timers — rough gemstones, a four-stage silicon-carbide grit system, jewellery fastenings and a full learning guide. Everything a curious kid needs to turn raw stone into polished treasure. 4-StageSilicon-Carbide Grit RoughGemstones Included JewelleryFastenings Included STEMLearning Guide 01 What it doesRaw stone in. Polished gem out. Load the barrel with the included rough gemstones, run it through four grit stages, and watch dull rocks emerge glossy and smooth — the same weathering process nature takes millennia to do, compressed into days. A genuinely satisfying first taste of geology. 02 The processFour stages, clearly labelled. Step 1Coarse Initial tumbling and shaping of the rough rock. Step 2Medium Smooths the surfaces after the first shaping pass. Step 3Pre-polish Refines the stone, readying it for the final shine. Step 4Polish Brings up the high-gloss, finished gemstone surface. "A first science kit they'll actually finish." 03 Make & keepTurn the gems into jewellery. The kit includes jewellery fastenings — cord, rings and pendant cages — so finished stones don't just sit in a jar. Kids can mount their best gem into a necklace or keyring and actually wear what they made, which is half the magic. Specifications BrandNational Geographic Grit system4-stage silicon carbide StonesAssorted rough gemstones included JewelleryFastenings + pendant cages GuideIllustrated learning guide LevelStarter / beginner-friendly PowerMains-powered tumbler Best forAges 8+ / first-time geologists Questions How is this different from the advanced tumbler?This is the starter — simpler to run and a lower price, ideal for a first kit. The advanced models add digital timers and multiple speeds. Both polish stones beautifully through four grit stages. How long does a batch take?Polishing runs across the four grit stages over roughly a week of tumbling, changing grit and water between stages per the included guide. Are the gemstones included?Yes — a selection of rough gemstones is included to get started, along with all four grit stages. What age is it for?Ages 8 and up. Younger children enjoy it with a parent helping at grit-change time. Can you make jewellery with it?Yes — jewellery fastenings and pendant cages are included so finished stones become wearable pieces. In Stock Ready to ship Free Shipping Tracked, Australia-wide 30-Day Returns Hassle-free Gifts Hub AustraliaA name you trust. A gift they'll finish. Rough gemstones, four grit stages and jewellery fastenings — the classic first geology kit. Add it to your cart above.