Mineral Hardness Test Kit - Education Set natural pyrite Approximate size of 1 piece:

Approximate size of 1 piece: One size fits all

You can see strong lengthwise striations

but they are all cuttable into 1 or more cabochons

Dimensions: 4

create a "flash" or "schiller" effect

Mineral Hardness Test Kit - Education Set natural pyrite Approximate size of 1 piece:Description: 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