🌟 Rock Your Classroom with Authenticity!
The EISCORaw Gray Limestone specimen is a meticulously selected 1" piece of sedimentary rock, ideal for educational purposes. Sourced globally and processed locally, each specimen is handpicked by a geologist, making it a perfect tool for geology classrooms to demonstrate key concepts like effervescence in acid and rock classification.
N**S
Technically 'gray' but actually black
For use in the classroom my students struggled to compare basalt and this limestone because it was so dark. It was only density that helped them distinguish between the two. Pieces are about 1" each.
M**R
Way overpriced for Rocks... C'mon
Returned. Way overpriced for Rocks... C'mon
M**.
Small but looks nice
Small but looks nice in my 10 gallon tank. Kind of expensive for the size. Baught it to try to bring up my ph in the tank. To soon to tell if it worked.
P**.
They're rocks,
I would give it a 5 but they're very small for how much they are. I've been keeping freshwater shrimp and snails for 10 years now. Snails and shrimp NEED calcium and the best way to give that to them long term is limestone. Sadly, I live in an area where I cant easily find limestone. If you have limestone in your driveway or in your yard, I recommend rinsing that off and using that instead.
B**Z
As described
This product arrived early and was exactly as described.
Trustpilot
1 week ago
3 days ago