What it is

MJR Tumblers is a first-party rock-tumbler, barrel and grit supplier based in Pecatonica, Illinois. Official product pages describe U.S.-made commercial-grade polymer-barrel tumblers with lifter bars, stainless-steel ball bearings and a two-year warranty, plus silicon-carbide and aluminum-oxide grit kits and related accessories. The shop states free shipping on many listings (excluding Alaska and Hawaii) and a 5% military / first-responder discount on the home page. It is not a membership gem club and not a teaching school.

Who it’s for

Hobby and production tumblers who want first-party U.S. rotary tumblers in multiple barrel sizes, refill grit and accessories with printed online prices and phone support. Confirm freight and free-shipping exclusions before ordering heavy units.

Why it’s listed

This is a first-party lapidary supplier with a printed Illinois street address, phone number, an official Shopify shop, and on-page dollar prices on tumblers and grit. It is not a scraped directory card, not Amazon, and not an affiliate-only storefront.

Business and contact (home / product footers, checked 2026-10-05): MJR Tumblers, 4316 N Goeke Road, Pecatonica, IL 61063. Phone 815-516-1288; email [email protected].
Sample tumbler prices (product JSON / shop pages, checked today): Rock Tumblers with Grit Kits — Medium Base — $360.00 (6 lb barrel) / $375.00 (10 lb) / $390.00 (12 lb) / $415.00 (dual 6 lb). Single Barrel Rock Tumbler variants from about $350.00–$575.00. Single Barrel Brass Tumbler with Stainless Steel Pins from about $445.00–$599.00. Medium base printed as 14 inches; large base 21 inches.
Sample grit prices (shop products JSON, checked today): Silicon Carbide 60/90 Coarse Stage 1 from about $14.76–$68.42; Rock Tumbler Refill Grit Kit from about $15.91–$46.08; 12,000 Extreme Polish Aluminum Oxide from about $25.64–$184.50.
Warranty / shipping notes (product pages / home, checked today): two-year warranty language on tumbler pages; free-shipping banners with Alaska/Hawaii exclusions; military & first-responder 5% discount noted on the home page.

The list prices above are what the official product pages showed on the check date. Stock and prices change. Use the live product pages before treating any figure as fixed.

Official URL

Last checked: 2026-10-05

https://mjrtumblers.com/

Rock tumblers collection: https://mjrtumblers.com/collections/rock-tumblers

Medium-base tumblers with grit kits (sample priced line): https://mjrtumblers.com/products/rock-tumbler-with-grit-kit

Single-barrel rock tumbler (sample priced line): https://mjrtumblers.com/products/copy-of-single-barrel-rock-tumbler-with-grit-kit

Silicon Carbide 60/90 grit (sample priced line): https://mjrtumblers.com/products/silicon-carbide-60-90-coarse-rock-grit-stage-1

Location

Street address (shop footer, checked 2026-10-05): 4316 N Goeke Road, Pecatonica, IL 61063. Phone 815-516-1288. The shop is an online first-party manufacturer storefront — confirm any walk-in or pickup policy by phone before treating the street address as a public retail counter.

This is a first-party tumbler and grit shop. Do not treat the address as a public classroom or a gem-club workshop.

Notes

Category is Suppliers. This listing is for MJR Tumblers’ own shop and published tumbler/grit price points. It is not a Clubs gem society and not a Workshops teaching program.
Sample prices are copied from official product pages / products.json checked on 2026-10-05 and may change. Confirm live variants and cart totals before buying.
Distinct from already-listed Thumler’s Tumbler and from standing-skip Lortone — different manufacturer and domain.
A first-party product photo of an MJR large-base tumbler is saved as mjr-tumblers.jpg. It came from MJR’s Shopify CDN (L40WG-Top-0355-cc1.jpg) and was resized/JPEG-recompressed only.
Not affiliated with Lapidary Plaza.
No Lapidary Plaza contact, purchase, booking, or publication action was taken.

FAQ

Q: Where is MJR Tumblers?
A: According to the official shop footer (checked 2026-10-05), 4316 N Goeke Road, Pecatonica, IL 61063. Phone 815-516-1288; [email protected].

Q: What do MJR tumblers and grit cost?
A: Example product pages checked on 2026-10-05 include medium-base tumblers with grit kits from $360–$415, single-barrel tumblers from about $350–$575, and 60/90 silicon carbide grit from about $14.76. Confirm on https://mjrtumblers.com/

Q: Does MJR Tumblers run classes or have a club?
A: No class or club program appears on the shop pages checked today. MJR Tumblers is listed here under Suppliers, not as a Clubs meeting organization or a Workshops class program.