Welcome to Grizzly Ridge Quartz Ranch

  Rare and Unique stones with a story.


Ethically mined on the Melones fault-line in the California Mother-lode.

John French

Email : john@thisoldrock.com


P.O. Box 325, Placerville, CA.  95667

Discover an outstanding collection of fault-line rocks and minerals that will elevate any collector's portfolio, add a touch of artistry to your decor, or enhance your classroom studies.

                                               John French


Photos  Bridge and Local History


We offer a STEM program and a Museum-grade inventory. 

Mother-lode Decor Landscape by Appointment.

 We invite you to explore the captivating history of California's Mother Lode! Join us on a journey through time to uncover the hidden stories that have shaped this fascinating region.


Are you prepared for an experience that will last a lifetime? Brace yourself for challenges and danger at every turn as you weigh the risks and rewards. Get ready to embark on a journey that will test your limits and leave you feeling more alive than ever before.

"Could the early history of California be written in all its details, it would form a volume of romance, startling as it would be interesting,
and it would again demonstrate the fact that truth is stranger than fiction." - The Placer Argus, Auburn, California, Thursday May 21, 1885.