Mohs Hardness Scale Rock Kit sold-out-hidden The North Africa Sahara region

The North Africa Sahara region is renowned for its exceptional dinosaur fossil preservation

Cobalto Calcite

and rich green hue

an extinct species of ancient ammonoid cephalopod

- Location: Uruguay

Mohs Hardness Scale Rock Kit sold-out-hidden The North Africa Sahara regionSize: 21 x 14 cms Weight: 38 grams (Avg) Location: Made in USA Product Description: This educational collection showcases the 10 minerals that comprise Mohs Hardness Scale, a fundamental tool for geologists and mineralogists. Each mineral specimen is carefully selected and labeled to illustrate its corresponding hardness rating, from 1 (softest) to 10 (hardest). The collection includes: 1. Talc (Mohs hardness: 1) 2. Gypsum (Mohs hardness: 2) 3.