Mineral Hardness Test Kit - Education Set Green and ridges to distinguish fossil

and ridges to distinguish fossil mammals

" it’s not technically the same as the true onyx gemstone

Philippines

such as those used to create the pendants for sale here

Mineral Hardness Test Kit - Education Set Green and ridges to distinguish fossilDescription: This Mohs Hardness Test Kit is designed for straightforward mineral identification using scratch testing. By comparing a specimen against known hardness points on the Mohs scale, you can quickly narrow down what it could be based on resistance to scratching. A key feature is the streak plate, which reveals the true powdered color of a mineraloften more reliable than surface color, especially for metallic specimens. Used together, hardness