{"product_id":"komestone-k5-rock-tumbler-for-kids-starters-dual-noise-reducing-rock-polisher-with-timer-3-speeds-memory-function-complete-stone-tumbling-kit-with-gems-all-accessories-a-fun-stem-gift","title":"KomeStone K5 Rock Tumbler for Kids \u0026 Starters– Dual Noise-Reducing Rock Polisher with Timer, 3 Speeds \u0026 Memory Function, Complete Stone Tumbling Kit with Gems \u0026 All Accessories – A Fun STEM Gift","description":"\u003cstyle\u003e.aplus-img{display:block!important;margin:0!important;padding:0!important;border:0!important;max-width:100%!important;height:auto!important;line-height:0!important;font-size:0!important;vertical-align:top!important}.aplus-img+.aplus-img{margin-top:0!important;margin-bottom:0!important}.aplus-wrap{line-height:0!important;font-size:0!important;margin:0!important;padding:0!important;display:block!important}\u003c\/style\u003e\u003cdiv id=\"v-about-wrap\"\u003e\u003c\/div\u003e\u003c!-- DBG1_A_descLen=0 --\u003e\u003c!-- DBG2_B_descLen=131 --\u003e\u003cscript type=\"application\/json\" id=\"about-details-data\"\u003e{\"59550667767889\":\"\u003ch4\u003eAbout This Item\u003c\/h4\u003e\u003cul class=\\\"about-this-item\\\"\u003e\u003cli\u003e𝟗𝟎-𝐃𝐚𝐲 𝐅𝐫𝐞𝐞 𝐓𝐫𝐢𝐚𝐥 \u0026 𝟏-𝐘𝐞𝐚𝐫 𝐖𝐚𝐫𝐫𝐚𝐧𝐭𝐲 — 𝐖𝐨𝐫𝐫𝐲-𝐅𝐫𝐞𝐞 𝐏𝐮𝐫𝐜𝐡𝐚𝐬𝐞: Includes a 𝟗𝟎-𝐝𝐚𝐲 𝐟𝐫𝐞𝐞 𝐭𝐫𝐢𝐚𝐥 and 𝟏-𝐲𝐞𝐚𝐫 𝐰𝐚𝐫𝐫𝐚𝐧𝐭𝐲 for added peace of mind. If Amazon’s 30-day return window is missed, 𝐔𝐒-𝐛𝐚𝐬𝐞𝐝 𝐜𝐮𝐬𝐭𝐨𝐦𝐞𝐫 𝐬𝐮𝐩𝐩𝐨𝐫𝐭 𝐢𝐬 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 to assist with replacement or refund requests. 𝐑𝐞𝐩𝐥𝐚𝐜𝐞𝐦𝐞𝐧𝐭 𝐩𝐚𝐫𝐭𝐬 𝐫𝐞𝐦𝐚𝐢𝐧 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 to help keep the rock tumbler in working condition.\u003c\/li\u003e\u003cli\u003e💡 We have also prepared extra belts for your spare use at no cost. Reach out to our customer center to get some — absolutely free.\u003c\/li\u003e\u003cli\u003eComplete Starter Kit — Everything Included: This rock tumbler kit includes a tumbler base, durable rubber barrel, 0.5 lb of assorted rough gemstones, 4 polishing grits, sifter, jewelry findings, 2 spare belts, and a full-color step-by-step guide. Designed so kids and starters can begin tumbling right out of the box without purchasing additional accessories.\u003c\/li\u003e\u003cli\u003eDual Noise-Reducing Safety Design: A thick rubber barrel combined with a sound-dampening safety cover helps reduce operating noise compared with standard plastic-barrel tumblers. The protective cover also helps minimize accidental contact during use, making it more suitable for home environments.\u003c\/li\u003e\u003cli\u003eSimple Digital Controls with Memory Function: Equipped with 3 speed settings, a 9-day timer, pause-and-resume capability, and automatic memory that resumes the program where it stopped. The clear display and guided controls make it easier for beginners to manage each polishing stage.\u003c\/li\u003e\u003cli\u003eHands-On STEM Learning Activity: An engaging, screen-free science project that introduces basic geology concepts while turning rough stones into polished keepsakes. Encourages patience, creativity, and hands-on learning for kids, starters, and hobby users.\u003c\/li\u003e\u003cli\u003eReplacement Parts Available \u0026 Ongoing Support: Designed for long-term use, with replacement parts available if needed. Customer support is provided to assist with product questions or part replacement, helping ensure continued use over time.\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003ch5\u003eProduct description\u003c\/h5\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/48e6427a-5604-49de-98a3-41a8826cf0bf.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/7cc2a50a-2997-443e-9b9e-b55897f1af0c.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/5933a1d1-0158-4e11-92a9-9efe8b04fc9d.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/40ed2cb2-0b4b-4a4c-9074-53f9dffd602f.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/2ae1038d-3425-4cc5-84d5-9f0120747442.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/2ba6b259-7d3d-4405-b4bc-7c99ec74657a.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/6643ad7c-da07-4e59-bf80-ed7178381ee8.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/f42ca9aa-bb41-48d3-9be9-7bc84b9c0802.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eGeo Learning Gift\u003c\/h5\u003e\u003cp\u003eBring earth science home. Learn, play, and grow — together.\u003c\/p\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/623cb60c-1d80-4ca7-9a42-0bdf0a56d99d.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eFor Couples\u003c\/h5\u003e\u003cp\u003eFrom rough stone to polished gem — shape something beautiful together.\u003c\/p\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/ce362722-3ee6-421c-bd50-cd936b1f5653.__CR0,0,1464,600_PT0_SX1464_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eHoliday Moments\u003c\/h5\u003e\u003cp\u003eGive the joy of hands‑on fun. Share what matters most.\u003c\/p\u003e\u003cp\u003eWith the KomeStone K5 Rock Tumbler Kit, you can easily experience the joy of polishing gemstones right at home. This entry-level rock tumbler is specially designed for children, beginners, and hobbyists, featuring simple operation and user-friendly controls.\u003c\/p\u003e\u003cp\u003eThe kit includes a durable rubber barrel, noise-reduction protective cover, digital control panel, 3 adjustable speed settings, up to a 9-day timer, pause and resume function, and automatic memory feature, allowing the tumbler to continue from where it last stopped without needing to reset the cycle.\u003c\/p\u003e\u003cp\u003eThe K5 Rock Tumbler Kit also comes with 0.5 lb of mixed rough gemstones, a complete 4-stage polishing grit set, a strainer, jewelry-making accessories, a spare drive belt, and a full-color step-by-step instruction guide. Everything you need is included, so you can start tumbling right out of the box without purchasing additional accessories.\u003c\/p\u003e\u003cp\u003eIts low-noise design makes it ideal for home use, while the protective cover helps reduce operating noise and prevents accidental contact, allowing children to use it safely under adult supervision. More than just a polishing tool, it is also an excellent STEM educational kit and creative gift, transforming ordinary rocks into smooth, shiny gemstones and keepsakes while encouraging hands-on learning and creativity.\u003c\/p\u003e\u003cp\u003eTips for Best Tumbling Results\u003c\/p\u003e\u003cp\u003e1. Choose the Right Rocks ——Select rocks with similar hardness levels to tumble together. This ensures more even grinding and better polishing results.\u003c\/p\u003e\u003cp\u003e2. Follow the Correct Tumbling Sequence ——The complete tumbling process includes: Coarse Grinding → Medium Grinding → Pre-Polish → Final Polish Please complete each stage in order and do not skip any steps to achieve the best shine.\u003c\/p\u003e\u003cp\u003e3. Use the Correct Amount of Grit——If you are using grit from bottles, follow these recommended amounts:Stage 1 (Coarse) and Stage 2 (Medium): Add 2 scoops each time;Stage 3 (Pre-Polish) and Stage 4 (Final Polish): Add 1 scoop each time\u003c\/p\u003e\u003cp\u003e4. Ceramic Media Can Be Reused ——Ceramic media can be reused across different stages. Please clean them thoroughly before each stage to maintain a clean tumbling environment and prevent contamination.\u003c\/p\u003e\u003cp\u003e5. Clean Thoroughly Between Each Stage ——After completing each stage, thoroughly clean the rocks, barrel, and ceramic media. This prevents coarse grit residue from affecting the next stage and is essential for achieving a high-gloss finish.\u003c\/p\u003e\u003ch5\u003eMore About KomeStone\u003c\/h5\u003e\u003cp\u003eK5: Starter \u0026amp; Kid Kit\u003c\/p\u003e\u003cp\u003ePolishing Refill Set\u003c\/p\u003e\u003cp\u003eAluminum Oxide Polish\u003c\/p\u003e\u003cp\u003eK1: Classical Choice\u003c\/p\u003e\u003cp\u003eK2: Elite Noise Reduction\u003c\/p\u003e\u003cp\u003eG1: Large Capacity\u003c\/p\u003e\u003cp\u003eK4: Large Double Barrel\u003c\/p\u003e\u003ch4\u003eFrom the Brand\u003c\/h4\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/df2e6985-ab90-43c8-8dec-4c2a3e78ec56.__CR0,0,1464,625_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/f3797aaf-b16c-4867-a1c8-144ed8929dea.__CR0,0,315,145_PT0_SX315_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eAmerica\u0026#039;s #1 Rock Tumblers\u003c\/h5\u003e\u003cp\u003eWe believe rock tumbling should be a joy, not a job.\u003c\/p\u003e\u003cp\u003eThat\u0026#039;s why KomeStone tumblers run quietly and consistently—no constant fuss. Brushless motors outlast your enthusiasm. Barrels so quiet you\u0026#039;ll forget they\u0026#039;re running.\u003c\/p\u003e\u003cp\u003eOur kits come complete: grit, media, belts, and know-how. No guesswork. No hidden extras. Just more time enjoying the reveal.\u003c\/p\u003e\u003cp\u003eKomeStone. Built for the journey.\u003c\/p\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/da6e223a-b307-4d56-ab3a-6d15fc57a5a5.__CR0,0,362,453_PT0_SX362_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/26a7fbee-956c-4906-8382-5571138710f9.__CR0,0,362,453_PT0_SX362_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/d37d93ce-31f7-46ef-92da-572bb511e2e1.__CR0,0,362,453_PT0_SX362_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\"}\u003c\/script\u003e","brand":"KomeStone","offers":[{"title":"Sky Blue","offer_id":59550667767889,"sku":"B0GHY34KBV_MULTI","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1013\/5958\/3313\/files\/81tcq6qdzsL._AC_SL1500.jpg?v=1779400632","url":"https:\/\/nexirou.com\/products\/komestone-k5-rock-tumbler-for-kids-starters-dual-noise-reducing-rock-polisher-with-timer-3-speeds-memory-function-complete-stone-tumbling-kit-with-gems-all-accessories-a-fun-stem-gift","provider":"Nexirou's Educational Toys","version":"1.0","type":"link"}