Contact Us

If you have any questions or concerns about your product order please contact:

Neil Delfino


Mineral and Gem Society of Castro Valley

P.O. Box 2145
Castro Valley, CA 94546.

(510) 887-9007

For other concerns see the our 2023 Officer list below:



Title Name Email Phone
President Neil Delfino  
Vice President Greg Croft  
Secretary Amy Marks  
Treasurer Joseph Alvarado
Director Phil Gross  
Director Norm Hodgson  
Director Rosita Croft  
Federation Director Bonnie Andrade  
Shop Manager Beth Farmer  
Show Chairman Vacant  
Membership Chair Joseph Alvarado 510-589-5292
Petrograph Editor Greg Croft  
Past President Jodi Minshall  


Title Name Email Phone
Scholarship Chair Greg Croft  
Librarian Norm Hodgson  
Historian Norm Hodgson  
Purchasing Agent Beth Farmer  
Education Coordinator Lily Johnson  
Sunshine Reporter All members  
Door Prizes Neil Delfino  
Webmaster Rosita Croft

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