Ordering Information


Acceptance Mark

To order a mineral, please contact me to enquire about the specimens availability. You can either send me an e-mail at mike@marinmineral.com with the mineral number and a description of the mineral or give me a call at 415-453-0927 or 415-342-1852. I will then confirm the specimen's availability status and follow-up with regard to shipping preferences and payment methods. Minerals will be sold on a first come first served basis. Please remember to look at the measurements of the minerals before ordering as some thumbnail sized specimens are shown larger than actual size and some large specimens are pictured smaller than actual size. If you are a California resident, a sales tax of 9% will be added to your order. Shipping charges will be $8.00 to $15.00 for most domestic orders. Small shipments out of the USA can be shipped for $10.00 with no insurance or via registered airmail for $25.00. Larger shipments out of the USA typically cost about $50 for insured shipping. Expedited shipping out of the USA can also be done using FEDEX for approximately $75-$125.

I accept VISA, Mastercard, and checks or money orders in U.S. dollars. Please note that all pricing is in U.S. dollars; currency conversions are provided for your convenience only, and subject to change due to currency exchange rate changes.

Pay using PayPal:

Make payment to mike@marinmineral.com (please note the is no "s" in my e-mail address)


Pay by VISA/Mastercard/American Express:


I will need the credit card number and expiration date to process the order. You can get me the information 3 ways (1) call me at 415-453-0927 or 415-342-1852, (2) send the information via a few separate e-mails, or (3) e-mail your phone number and I will call you.

Pay by personal check:

Make checks payable to Mike Keim. Send checks to:

Marin Mineral

P.O Box 5256

Larkspur, CA 94977-5256

Return Policy:

I strive to describe the minerals accurately by photos and giving specimen dimensions and pointing out any damage. If upon receipt of the minerals you are not completely satisfied, notify me of your intent to return the mineral within 7 days. I will refund your money (less the cost of shipping; merchant card fees may apply to larger orders) upon receipt of the specimen returned in the same condition .

Thank you,


Mike Keim

Owner/Marin Mineral

©2010-2017 Marin Mineral