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RAW FOSSILIFEROUS LIMESTONE
1" Sedimentary Rock Specimen
This rock formed at the bottom of a marine environment through the compaction of deceased organic matter in a clay or silt cement. Ideal for teaching students about rounding and sorting, as well as for identification & classification exercises, for studying fossils within whole rocks and sedimentary rocks.
Selected & Locally Processed by a Geologist.
Each and every specimen is selected and hand processed by an actual geologist, ensuring that each sample exhibits defining features. Minerals and minerals are sourced from a variety of locations around the world and are processed by hand in Victor, NY
Technical Support
Always feel free to reach out to our team of scientists and geologists for additional information, or to assist you with any questions regarding our rock and mineral samples.
- Ideal for teaching students about rounding and sorting
- Excellent for identification & classification exercises
- Available in single, 6 pack and 12 pack sizes
- Excellent for any geology classroom
M.Hennig
2025-09-03 14:21:20
My son needed limestone for his isopods. This worked great…..he is happy and the isopods are happy.
thomas g.
2025-08-13 13:30:56
Was fine, hard to not be, was a bag of rocks!
Manny Traveler
2025-08-07 16:13:42
Got my bag and I was expecting bigger rocks. However the size is very small. I was hoping to add them to my fish tank to help with raise Ph. Fits in a small mesh bag. I wanted to use them as decor for the fish tank and centerpiece. In the meantime, I'll see how it goes and if it helps stabilize the ph for my ten gallon tank.
Brandon S.
2025-06-16 10:45:21
I added them in a lottery mix of powder blue, orange, and dairy cow isopods. Look nice inside their enclosure.
jfcegfuer
2025-04-20 15:45:06
Great source for geologist prepared mineral specimens at a fair price!
V
2025-02-10 11:12:04
I got these to help with the low ph on my tank. They are so small they have no affect.
Mont@n@
2025-02-07 17:31:01
Since Amazon got rid of the reply feature I thought I should post something for fish tank hobbyists. Limestone increases ph. The reviewer that said these are too small and have no effect to “lower†ph is sadly mistaken. They should not post negative 1 star reviews when they don’t know what they’re talking about. Fish such as African cichlids need a higher ph than most freshwater fish. Limestone helps to increase that. Aragonite sand and other calcium rich decor will also help raise it. No wonder they are mad that it’s not lowering their ph. Smh
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