[[1]] is the hardest mineral.

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Detailed Solution

Diamond is the hardest mineral, followed by topaz, quartz, feldspar, apatite, fluorite, calcite, and gypsum on the Mohs scale of mineral hardness. They are incredibly hard because the intense heat and pressure that existed between 140 and 150 kilometers below the surface of the Earth caused them to solidify in a particular atomic shape. They are used for industrial and jewelry purposes. According to reports, Russia produced the most diamonds, followed by Botswana, Australia, etc. The Mohs scale gave diamond a score of 10, which is considered to be the ideal hardness rating.

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