--- product_id: 434907584 title: "Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (3 lb.)" brand: "polly plastics" price: "VT21066" currency: VUV in_stock: true reviews_count: 8 category: "Polly Plastics" url: https://www.desertcart.vu/products/434907584-rock-tumbler-media-grit-refill-pre-polish-500-silicon-carbide store_origin: VU region: Vanuatu --- # 500 grit precision pre-polish Universal tumbler compatibility Made in USA quality assurance Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (3 lb.) **Brand:** polly plastics **Price:** VT21066 **Availability:** ✅ In Stock ## Summary > 💎 Elevate your rock tumbling game—because your stones deserve the spotlight! ## Quick Answers - **What is this?** Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (3 lb.) by polly plastics - **How much does it cost?** VT21066 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/434907584-rock-tumbler-media-grit-refill-pre-polish-500-silicon-carbide) ## Best For - polly plastics enthusiasts ## Why This Product - Trusted polly plastics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Beginner-Approved:** Backed by a 100% satisfaction guarantee—perfect for hobbyists and pros alike. - • **Mess-Free Storage:** Durable, reusable jars keep your grit fresh and spills at bay for your next creative session. - • **Crafted in the USA:** Proudly American-made with premium sourced materials for unmatched purity and performance. - • **Fits Every Tumbler:** Seamlessly compatible with all major rock tumblers—Elenco, Lortone, Smithsonian & more. - • **Stage 3 Perfection:** Transform rough stones into gleaming gems with 500 grit silicon carbide pre-polish. ## Overview Polly Plastics Rock Tumbler Media Grit Refill offers 3 lbs of premium 500 grit silicon carbide pre-polish media, designed as Stage 3 in a 4-step tumbling process. Compatible with all major rock tumblers, it comes in durable, reusable jars and is proudly made in the USA, ensuring high purity and consistent polishing results favored by both beginners and experts. ## Description Polly Plastics Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (3 lb.): desertcart.com: Industrial & Scientific Review: Does a good job, touching up knives! - Quality stuff, delivery was fast ! Review: Pure Aluminum Oxide - Better than other brands - I get an excellent polish with this 1200 grit. Rocks come out way shinier than when using other polish brands. For instance the Rockshed 1000 grit results in dull rocks in comparison. The Rockshed grit color is gray and under a high powered microscope you can see contamination, black particles, which make the overall color of the grit gray. Aluminum oxide, with high purity, should be white. ## Features - STAGE 3 OF 4 STEP ROCK TUMBLING MEDIA GRIT – Two 1.5 lb. jars of Stage 3 media grit for transforming rocks and gemstones into beautiful treasures. Contains a total of 3 lbs. Pre-polish 500 Grit. - COMPATIBLE WITH ALL TUMBLERS - Our universal grit is designed for any rock tumbler. Elenco, Lortone, National Geographic, Smithsonian, Thumler and more! - SUPERIOR PACKAGING - Packaged in durable, re-usable jars to prevent messy spills and to safely store unused product for later. - MADE IN THE USA – Polly Plastics is an American company with American sourced materials for superior quality control and reduced risk of contaminants. - BEGINNER FRIENDLY - 100% satisfaction guarantee on all our products. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09K6MVRQ1 | | Best Sellers Rank | #8,257 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Tumbling Media | | Brand | Polly Plastics | | Brand Name | Polly Plastics | | Compatible Material | Stainless Steel | | Customer Reviews | 4.7 out of 5 stars 2,533 Reviews | | Grit Material | Silicon Carbide | | Grit Material Type | Silicon Carbide | | Grit Number | 500 | | Manufacturer | Polly Plastics | | Material | Silicon Carbide | | Material Type | Silicon Carbide | | Number of Items | 2 | ## Product Details - **Brand:** Polly Plastics - **Grit Material:** Silicon Carbide - **Grit Number:** 500 - **Material:** Silicon Carbide - **Number of Items:** 2 ## Images ![Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (3 lb.) - Image 1](https://m.media-amazon.com/images/I/71Cv87+59FL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does a good job, touching up knives! *by M***D on February 8, 2026* Quality stuff, delivery was fast ! ### ⭐⭐⭐⭐⭐ Pure Aluminum Oxide - Better than other brands *by B***5 on January 24, 2026* I get an excellent polish with this 1200 grit. Rocks come out way shinier than when using other polish brands. For instance the Rockshed 1000 grit results in dull rocks in comparison. The Rockshed grit color is gray and under a high powered microscope you can see contamination, black particles, which make the overall color of the grit gray. Aluminum oxide, with high purity, should be white. ### ⭐⭐⭐⭐⭐ Newbie: Still learning *by A***Y on August 10, 2020* So I am new to rock tumbling, I just got my first hobby kit ever for my birthday in June (National Geographic Rock tumbler for those interested) the kit only came with so much grit and being as Ive collected a lot of rocks in the last however many years, I ran out fast. So I went to Polly Plastics to find some well priced and well working grit. Well it came SUPER fast. When I ordered on Friday it was estimated that I would receive my product by the following Wednesday, but I received it on Sunday. It was expertly packaged, you could tell that care went into me receiving my grit. Not only were the two one pound bags of grit in some heavy duty zipper sealed bags, but they were inside another zipper sealed bag, then wrapped in plastic. If these bags had leaked at all it wouldn’t have gone anywhere! Luckily they didn’t leak and I was able to get all my grit into the jar I use to keep it in. I’ll update in a few days to let you know the quality of the grind as my rocks are now currently in and being tumbled. Update: I took my rocks out of my tumbler today. For all those who would like to know my tumbler is a little 3 pound tumbler. Everything I have read says that you need to add two tablespoons of grit. When I pulled my rocks out today there was SO much extra grit that it had created a nearly cement layer at the bottom of my tumbler that took several washes in order to clear out the grit and get all my rocks out. Most of them were smooth enough to move on to the next phase. The grit is very shiny, almost metallic. I’ll update in a few more days, I put only one tablespoon in for this round. Update: Just pulled the batch out that had only one tablespoon of grit in it and it worked beautifully, it seems that for my 3 lb. hobby tumbler one tablespoon of this grit is plenty. I have attached a picture of my rocks that are ready to go on to phase 2. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/434907584-rock-tumbler-media-grit-refill-pre-polish-500-silicon-carbide](https://www.desertcart.vu/products/434907584-rock-tumbler-media-grit-refill-pre-polish-500-silicon-carbide) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-06*