May want to call ahead to make sure they are open. But w that said the owners have been rock collectors their whole life! They share their vast wealth of knowledge and experience very willingly. Huge selection and collection for sale etc. Great place to go will go again and again! read more

We visited Marshas Minerals and Rocks in Los Molinos recently. Marsha and her husband John were very welcoming, friendly, accomodating, and knowledgable. They had a great wide variety of rough and tumbled minerals and rocks. They had deep knowledge of minerals and lapidary which they were willing share and advise from. I highly recommend this rock shop. read more

Had a great time talking to the owners about rocks when I was building my rock collection. The owners are a playful couple who like to tease each other, so it was a lot of fun quizzing them on the types of rocks in their collection, especially because their collection is huge! I bought three round, polished, egg shaped rocks that looked so pretty. I love displaying them and seeing the vibrant colors every day. They also threw in a fossilized dinosaur poop for me to get people to smell. read more

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Love this rock shop. The owners are very knowledgeable and kind. Great selection of a wide variety. Decent pricing too.

John and Marsha are great people. John knows his rocks and gems. Their store is in a small warehouse in a residential area. They have a wide variety of different specimens and there were so many things that we liked. Their prices are very fair. We will definitely be back. read more

Today's trek to Marsha's Mineral and Rocks was a delightful experience. Next time we head down we will make it our only stop as this is not a place you what to be in a hurry while exploring. In the shop and out back there is a huge variety of items to rockhound! This is not a trendy place but a place for rock lovers. read more

I love this place from the time I walk in the owners are are welcoming and the husband jokes around making me feel very comfortable. He is very knowledgeable about the rocks and helpful on the projects that I want to do. They have some of the most beautiful jewelry around. I could spend hours in that place! read more

shelves and shelves of raw and cut pieces, display cases of set jewelry, piles of rocks it back if you want to hunt.. even some rock equipment like cutters and polishers for sale read more

Well I'm afraid I must be the single voice of dissent when I tell you that I most definitely do not recommend this place. I don't think I care how much John and Marsha know about rocks, their business sense and customer service leaves a lot to be desired. Now, if you are a childless person you can probably safely ignore this poor review, but if your kids are interested in rocks and crystals and you see the sign for Marsha's Minerals on the way through town, just keep driving. Let me tell you our experience: We were in a position to spend a little bit of money--I had a Christmas gift to buy and my kids are all really into rocks. My daughter is studying rocks in school and was eager to buy something to take to school and share with her class. So as we all approached the shop we saw The Sign. I can't remember every rule on it but by the time I got through number three I was already a little bowled over by the obvious superiority of the shop's proprietors. Rule number 1: Watch your children. Rule number 2: You break it, you buy it. Rule number 3: Cash or "printed check" only. So we walked in, my kids first and my husband and I right behind. No sooner did we cross the threshold then John ordered us to go back outside and "read the sign," which, by the way, I already had. Now, my kids hadn't touched anything or taken more than a few steps into the shop, and John started listing off everything that he had inside the store that might possibly break. And then he told us again to all go back outside and "read the sign." So I followed the first part of his order, but not the second. Instead of going back outside to "read the sign" we went back to our car and drove into Chico, and we spent our $200 there instead of with John and Marsha. At that point I was no longer interested in giving him our business. Now let me just point out a couple of things: 1) If you don't want people to bring their kids to your shop, change rule number one from "watch your kids" to "no kids allowed." Honestly, John had no reason to believe I wasn't going to watch my kids, but he was so damned patronizing less than five seconds after he laid eyes on us that I really stopped giving a crap whether or not I got to see the inside of his store. 2) This shop is being run in the 1920s. Or something. I can't really think of another reason why you would have a "You break it, you buy it" policy. Most modern business insurance policies cover inventory losses, so I'm really not sure why his doesn't. 3) I don't know what a "printed check" is, exactly, vs. what, an IOU written in blood? But again, I'm pretty sure this store is operating in the 1920s. I had a "printed check" (if I indeed understand what the hell that is) but who doesn't take credit cards? Hey, you know you can get a swiper for your phone, right? Oh right, they don't have cellphones in the 1920s. 4) I forgot the best part, the sign just inside the front door that says "We reserve the right to be rude to our customers." Seriously, John? That's supposed to make me want to spend money with you? Then I'm sure you won't mind that I reserve the right to be rude to you in my Yelp review. Anyway, from now on when we drive through and see that "rock shop" sign we will just keep on going. And if your little one is rock crazy like mine are, well, there are plenty of other places where you can spend your money AND also feel like a valued customer. read more

This is a real rock shop. John and Marsha have rocks and gems from all over, some are from old collections that you will not see in your lifetime. We had just come from Richardson Ranch in Oregon and were somewhat disappointed with the inventory they had there. Marsha's shop will blow you away. They have finished jewelry, not just some rocks with twisted wire either. If you are shopping for equipment they can help you too. I love these guys! read more

John and Marsha - are amazing people. John knows soooo much about the rocks and minerals and us up front if he doesn't know. They are fun to visit and have incredible amounts of goods in the store. definitely recommend a visit. I live in Hayward and made the trip up there in one day. sooo much nice stuff, so willing to instruct. read more

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This place is magical John and Marsha are absolutely amazing people my husband and I can't wait to visit again. So many veritities of gems, rocks and minerals, we spent a few hours just walking around enjoying all the beautiful specimens asking questions getting advise, the best part was getting to know John and Marsha. We brought home a few beautiful pieces and didn't break the bank, I already know what I am getting on our next trip I pray it's still there. You can get crystals, geodes, and petrified poop all in one place. read more

I LOVE THIS PLACE!!! YOU HAVE to go visit Los Mo and check out the store and make sure you grab a water bottle and go out back to the stone yard. The owners are amazing!!!! So instead of text messaging while driving or while walking the dog grab the kids and head out to Los Mo and have fun... read more

A hidden gem! I have been going around to many rock shops in the bay area and this one definitely tops the list. A must see if you are passing through the Chico/Redding/Mount Shasta area. It is in fact in Los Molinos, right on CA-99, at the edge of town. The best part of my pit stop here was the owners. They are great people and very knowledgeable - any gem geek or rock hound would go bananas here (in a good way). They have tons of inventory - specimen pieces, jewelry, rock slabs, spheres, lapidary equipment, carvings, etc, etc.. And if you want to hear stories, they've got stories! Marsha's is definitely not "hoity-toity" or pretentious. This place is humble and closer to source. I left feeling like I made friends and I found a go-to place for my rock/gem fix and any questions I may have working with them. Thanks John and Marsha! read more

Customer service phenomenal! I went there with my 11 year old son and we were received with arms open wide. It was like we had a few class along with the shopping experience . They have some rare rocks there as well as a few lovely Crystals and beautiful jewelry. Easy access off I-5 and lots or fruit stands to stop at while en route . They were kind enough to gift my son some rocks for his collection and he was so grateful. I left with a huge box for less than 75 dollars . Small town feel with the customer service and great prices too! read more

Great couple and great selection of raw and finished rock and minerals for collection and jewelry use. We have been to every shop within 3 hrs of SF bay and many even further away... This is now our favorite. John and Marsha know their trade, have reasonable prices and have a broad variety of California minerals as well as some exotics. No bs, no fake material... Just two people who love the craft and are genuinely happy to meet you. Looking for shiny quartz piece for your 12 year old daughter ? This is not the place ... If you need real rocks / minerals and expert advice or even are just curious, this is the place to go... Can't recommend enough.... Worth the small detour off hwy 5 ! read more

This is a very unique shop that sells many variations of crystals, precious stones, jewelry, metaphysical items, ie., sage, incense, dream catchers, etc. The owner actually mines the products he sells and has many hard-to-find crystals in their raw form. He lets you grab a water bottle and go outside to his outdoor yard and spray water on the many varieties of raw stones so you could see the beautiful colors in the sun light. Some of the items I've bought are the following: Huge, raw, unpolished chunk of bloodstone that would've been very expensive in commercial crystal shops, beautiful specimen of rock crystal in matrix with rainbow inclusions and tantric twins embedded in matrix, amazing specimens of mexican fire agates polished by owner himself, rare amber with insects frozen in specimen, beautiful jewelry with precious stones, blue adventurine in raw form and all items priced very reasonably. It's a bit of a drive, but totally worth it! There is no other store in the bay area that has such great prices. In fact, the owners gave us as an added bonus free, raw chunks of various crystals that would cost a fortune anywhere else, such as leopard skin jaspers, rare agates I've never seen before, mahogany obsidian, and breciated jasper platelet. read more

Fabulous, knowledgable, honest, helpful people. Wonderful shop. Every time I go north, I MUST STOP BY. I've gotten great material and advice every time I have visited. You won't find a better rock shop. read more

jhon and marssha rock shop is sure is nice people are friendly and heplful nice rock shop well kept very heplfull in rocks jhon a lot about rocks thanks read more