Worldwide Rock Tumbling Contest

2023 Worldwide Tumbling Contest!

Update: August 31, 2022

The Feather River Lapidary & Mineral Society, Inc. would like to congratulate the top 3 winners of our tumbling contest:

  • 1st place winner: Sam Cook, Alpena, MI
  • 2nd place winner: Matt Johnson, Hitchcock, TX
  • 3rd place winner: Zachary Belknap, Longmont, CO


Tumbling Contest Rules:

Updated: January 9, 2023


All rock for the 2023 Tumbling Contest is sold out.
Sorry to those who missed out and good luck to all those who are participating!

Thank you,

Lori Millard



To all contestantsOnly the stones in your purchased box may be used.  It is not okay to buy several boxes to up your chances of winnings.
If you have any questions about this contest, please email me, Lori Millard, at  lorimillard58 (at)
Some info floating around on facebook is absolutely false.


The rock for 2023 is Petrified Wood from Washington State. Entry fee is $39 for 3 pounds of rough rock for continental US residents. This includes shipping the material to you. Outside the USA will be $39 plus any additional shipping.

  • Three pounds of rough rock will be shipped to you when the application and payment is received beginning January 1, 2023.
  • Deadline for application is June 1, 2023.
  • Mail 5 (yes only 5) of your best finished rocks and a copy of the entry form postmarked no later than August 15, 2023.
  • Apply early in the year to have plenty of time to tumble. Take your time tumbling!
  • Cash prizes = $250, $100, and $50 for first, second, and third place winners!

To enter the contest:

  • Digitally: Download and fill out the application linked above and email the completed form to (save completed document to your computer or print to pdf). Mail your payment to the address below.
  • Hard Copy: Download, fill out, and print the application. Mail the application in with your payment to the address below.
  • Payment by Mail is required!
    Please make check or money orders payable to “FRLMS” and mail to: Tumbling Contest, c/o Lori Millard, 2660 Cherokee Road, Oroville, CA 95965

For more information, call Lori at (530) 533-2968 or email

Results will be posted on Facebook and here after the show in mid-September.

Previous Worldwide Tumbling Contest Pages


Rock Tumbling Information … learn about using 1,000 grit has the largest library of rock tumbling articles.

Tumble Masters

Rock and Gem Magazine article in March 2015

The history of rock tumbling.

Winning 2022 Tumbled Rock:

1st Place Sam Cook, Alpena, MI
1st Place: Sam Cook
2nd Place: Matt Johnson
3rd Place: Zachary Belknap