That would be its Mohs hardness.
Hardness
A characteristic of minerals that describes their resistance to fractures or scratches is called "hardness." This property is commonly measured using the Mohs scale, which ranks minerals from 1 (talc) to 10 (diamond) based on their ability to withstand scratching by other substances. A higher hardness value indicates greater resistance to wear and damage.
The hardness
physical property
Geologists focus on the hardness property of minerals when they perform scratch tests. This test helps determine the resistance of a mineral to being scratched by another material, which can be indicative of its mineral type.
A rock's hardness is its resistance to scratching or abrasion. This is commonly measured using the MOH's scale of hardness.
Hardness measures a mineral's resistance to being scratched.
Jamal is likely testing the hardness of the minerals, which is a common property used for identification. This could involve scratching the minerals with a reference material or observing how easily they can be scratched. By assessing their resistance to scratching, he can compare the results with known hardness scales, such as Mohs scale, to help identify the minerals.
its called streak
That property is called cleavage or fracture, depending on how the mineral breaks.
The light hits its own motion to make its speed
Mineral hardness measures the resistance of a mineral to scratching or abrasion. It is determined by the ability of a mineral to scratch another mineral or be scratched by it, as defined by the Mohs scale of hardness.