This Old Rock was founded in 1998, to study minerals and share their wonderment.  


 In 1999 we purchased a remote parcel of land with a small surface deposit of quartz crystals.  This deposit has developed over the years to a remarkable series of crystal caverns.   What makes this endeavor intriguing, in addition to the giant quartz crystals, is their unusual and amazing crystallography.  

  The mine owner, John French.  John's interest in rocks began at an early age.  As our Project Manager, he is experienced in advising clients.   We have a Select Inventory of Show-stoppers guaranteed to inspire, engage, and excite your audience!   

   Friendship rocks the heart of the Sierra Nevada mountains, in the California Mother Lode.