# KomeStone 12000 Grit Aluminum Oxide Rock Tumbler Polish KomeStone 12000 Grit Aluminum Oxide Rock Tumbler Polish is a fine finishing powder for the last stage of tumbling prepared rocks, gems, or glass. It is presented as a refill for rotary and vibratory tumblers, with results depending on the material, earlier preparation, load, and cycle time. - [Original product page](https://best-deals.pro/product/komestone-12000-grit-aluminum-oxide-rock-tumbler-polish) - [View offer](https://best-deals.pro/visit/komestone-12000-grit-aluminum-oxide-rock-tumbler-polish) - Market: US - Language: en-US - Currency: USD - Brand: KomeStone - Price: 25.48 USD - Previous price: 28.48 USD - Discount: 11% - Price checked: 2026-11-12T11:12:12.720Z - Rating: 4.8 / 5 - Reviews: 43 Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store. ## At a glance - Intended as a final polishing stage after earlier grinding, smoothing, and regular polishing. - Can be used after an optional 8000-grit cycle, according to the listing. - Suitable for prepared quartz, agate, gemstones, and glass, including decorative and jewelry projects. - The maker suggests starting with about 0.05 lb of powder per 1 lb of stones and using 3–5 days as an initial cycle guide. - For a finish cycle, clean stones and the barrel thoroughly, follow the tumbler's water guidance, and rinse after polishing. ## Pros - 12000-grit aluminum oxide offers a higher nominal grit option for a dedicated finishing cycle. - Listing describes use in both rotary and vibratory tumblers. - The resealable container is intended to make measuring batches and storing remaining powder easier. ## Cons - A final polish is only one stage of the process and relies on suitable prior surface preparation. - Cycle time and finish can vary with stone type, hardness, load, equipment, and polishing time. ## Specifications ### Identity and material - Brand: KomeStone - Abrasive and grit: 12000 Grit Aluminum Oxide - Intended stage: Step 5 Enhanced Final Polish ### Use and handling - Compatible tumbler types: Rotary and vibratory machines - Suggested starting ratio: 0.05 lb of powder per 1 lb of stones - Initial cycle guide: 3–5 days - Package format: Resealable container ### Dimensions and installation - Weight listed: 1.15 pounds - Package dimensions: 5.2 x 3.19 x 3.11 inches ## Before you buy - The listing calls this a 1 LB refill in its feature text and describes it as ideal for 1 lb of rocks, while the listed item weight is 1.15 pounds. These details do not establish the net powder quantity or a guaranteed batch capacity, so confirm the selected listing if the exact amount matters. The suggested 3–5-day cycle and powder ratio are starting guidance, not guaranteed settings, and results vary by material and equipment. ## A good fit for - Tumbling hobbyists who already have prepared stones and need a fine finishing powder. - Users of rotary or vibratory tumblers working with quartz, agate, gems, or glass. - Projects focused on a final surface finish for collections, decorative stones, or small jewelry pieces. ## Less suited to - Buyers seeking a complete multi-stage grit kit rather than a finishing refill. - Anyone expecting a guaranteed gloss without completing appropriate earlier grinding and polishing stages. ## Customer feedback Customer feedback describes the polish as effective and shiny, including a mention of a high-gloss finish. Positive feedback also highlights shine and functionality. These are customer impressions rather than guaranteed outcomes. The product is listed as a 12000-grit final-stage powder, so buyers should account for the required earlier preparation and the stated variability by material and cycle conditions. - Positive themes: Customers describe the polish as effective and shiny. - Positive themes: Feedback mentions shine and functionality. ## Frequently asked questions ### What stage is this polish for? The listing identifies it as a Step 5 final polish, used after earlier grinding, smoothing, and regular polishing. It also says an 8000-grit cycle can optionally come before it. ### Which tumblers can use this powder? The listing says it works with rotary and vibratory tumblers. Follow your machine's water guidance. ### How much powder and how long should I use it? The suggested starting amount is approximately 0.05 lb per 1 lb of stones, with 3–5 days as an initial guide. Check progress and adjust for the material and equipment. ### What materials is it intended for? The listing names prepared quartz, agate, gemstones, and glass. 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