Diamond, with a hardness of 10 on the Mohs scale.
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Diamond is the mineral with the highest number on the Mohs scale of mineral hardness, which is a 10. This scale ranges from 1 (softest) to 10 (hardest), with diamond being the hardest mineral.
The mineral hardness scale is called the Mohs scale of mineral hardness, named after German geologist Friedrich Mohs who created it in 1812.
Friedrich Mohs developed the Mohs scale of mineral hardness in 1812, which ranks minerals on a scale of 1 (softest) to 10 (hardest) based on their scratch resistance. This scale is widely used in geology and mineralogy to determine the hardness of minerals.
The numbers on the Mohs hardness scale represent the relative hardness of minerals. The scale ranges from 1 (softest) to 10 (hardest), with each number corresponding to a different mineral's ability to scratch or be scratched by another mineral.
The softest mineral is talc, with a hardness of 1 on the Mohs scale. The hardest mineral is diamond, which has a hardness of 10 on the Mohs scale.
Friedrich Mohs' hardness scale is simply known as the Mohs Scale of Mineral Hardness.