It depends on how soft the mineral is. For example, Talc is the softest mineral. You can scratch it with just a fingernail. but on the other hand, Diamond, the hardest mineral can only be scratched with another Diamond. So as long as you are not trying to scratch a diamond (it would be 50/ 50 change of scratching if use another diamond), use a diamond.
NOTE: how easy it is to scratch a mineral has nothing to do with how easy it is to break a mineral. Example diamond is the hardest mineral but can be chipped or broken by a good strong hammer stroke.
Talc is the softest mineral and can be scratched by any other mineral.
Gypsum is a mineral commonly found in drywall that is easily scratched due to its low hardness on the Mohs scale of mineral hardness.
Gypsum (number 2 on the Moh's Hardness Scale)
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
The most commonly known mineral that can be scratched by a fingernail is talc.
hardness
hardness
Talc is the softest mineral and can be scratched by any other mineral.
hardness is how easily a mineral can be scratched
The term for this is "hardness".
Gypsum is a mineral commonly found in drywall that is easily scratched due to its low hardness on the Mohs scale of mineral hardness.
Hardness is the measure of how easily a mineral is scratched.
Hardness
Calcite is a mineral that can be easily scratched by a steel nail due to its relatively low hardness compared to steel.
Gypsum (number 2 on the Moh's Hardness Scale)
Magnatite is the mineral that has a nonmatallic luster, is black, and can be scratched by a fingernail.
True, hardness is determined by how easily a mineral can be scratched. The Mohs scale is commonly used to measure hardness, with higher numbers indicating greater hardness.