---
product_id: 208724700
title: "EISCO 12PK Raw Gray Limestone, Sedimentary Rock Specimens - Approx. 1\" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack"
brand: "eisco"
price: "C$2232"
currency: NIO
in_stock: true
reviews_count: 4
url: https://www.desertcart.ni/products/208724700-eisco-12pk-raw-gray-limestone-sedimentary-rock-specimens-approx-1
store_origin: NI
region: Nicaragua
---

# Individually Packaged Geologist Selected 12PK Raw Specimens EISCO 12PK Raw Gray Limestone, Sedimentary Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack

**Brand:** eisco
**Price:** C$2232
**Availability:** ✅ In Stock

## Summary

> 🧪 Discover the Earth, One Rock at a Time!

## Quick Answers

- **What is this?** EISCO 12PK Raw Gray Limestone, Sedimentary Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack by eisco
- **How much does it cost?** C$2232 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/208724700-eisco-12pk-raw-gray-limestone-sedimentary-rock-specimens-approx-1)

## Best For

- eisco enthusiasts

## Why This Product

- Trusted eisco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Global Sourcing:** Experience diverse geological formations from around the world.
- • **Expertly Curated Samples:** Each specimen is hand-selected by a professional geologist.
- • **Effortless Identification:** Individually packaged and labeled for seamless classroom use.
- • **Elevate Classroom Engagement:** Foster collaboration with group study opportunities.
- • **Unlock the Secrets of Geology:** Perfect for hands-on learning and exploration!

## Overview

The EISCO 12PK Raw Gray Limestone set features geologist-selected sedimentary rock specimens, each approximately 1 inch in size. Ideal for educational settings, these samples are perfect for demonstrating geological concepts and are individually packaged for easy identification.

## Description

EISCO 12PK Raw Gray Limestone, Sedimentary Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack

## Features

- GRAY LIMESTONE | The massive, gray variety of limestone is often found deposited in marine environments. It is made up of organic material, primarily calcium carbonate
- GREAT FOR GEOLOGY CLASSROOMS | Excellent for demonstrating the tendency of calcium carbonate to effervesce in acid, and is perfect for identification and classification exercises. This set of six samples is excellent for group study and examination
- GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
- LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
- INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification

## Images

![EISCO 12PK Raw Gray Limestone, Sedimentary Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack - Image 1](https://m.media-amazon.com/images/I/81BR3CXsetL.jpg)
![EISCO 12PK Raw Gray Limestone, Sedimentary Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack - Image 2](https://m.media-amazon.com/images/I/81qxT1TJXAL.jpg)
![EISCO 12PK Raw Gray Limestone, Sedimentary Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack - Image 3](https://m.media-amazon.com/images/I/81-VMrFkXpL.jpg)
![EISCO 12PK Raw Gray Limestone, Sedimentary Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack - Image 4](https://m.media-amazon.com/images/I/61iirPWniZL.jpg)
![EISCO 12PK Raw Gray Limestone, Sedimentary Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack - Image 5](https://m.media-amazon.com/images/I/71bi-O0ltTL.jpg)

## Available Options

This product comes in different **Number of Items** options.

## Questions & Answers

**Q: Will this help raise the pH in my fish tank?**
A: This product is meant for a classroom/laboratory setting, we do not have information on this product in relation to the pH of a fish tank.

## Customer Reviews

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    Technically 'gray' but actually black
  

*by N***S on Reviewed in the United States on December 18, 2022*

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.

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    Small but looks nice
  

*by M***. on Reviewed in the United States on March 28, 2022*

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.

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    They're rocks,
  

*by P***. on Reviewed in the United States on June 9, 2023*

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.

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**Shop now:** [https://www.desertcart.ni/products/208724700-eisco-12pk-raw-gray-limestone-sedimentary-rock-specimens-approx-1](https://www.desertcart.ni/products/208724700-eisco-12pk-raw-gray-limestone-sedimentary-rock-specimens-approx-1)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-01-28*