Diamond
Diamond is the hardest mineral at Mohs hardness 10, ten being the hardest. There is no natural mineral substitute for processes requiring diamond. Diamond is four times as hard as corundum, the mineral constituting rubies and sapphires. Although diamond is the hardest naturally occurring mineral, it is easily fractured, a characteristic which allowed early jewellery makers to facet this crystal.
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The hardest mineral is diamond, and the softest mineral is talc.
Diamond is the hardest mineral known.
The softest known mineral is 'TALC'. The hardest known mineral is 'DIAMOND' (according to Friedrich Mohs scale)
Diamond is the hardest mineral currently known and is an allotrope of carbon.
Silicon Dioxide (known as Quartz) is not the hardest mineral, the hardest mineral is an allotrope of carbon called diamond. Quartz is only the 7th hardest mineral.
Diamond is the hardest mineral known.
Diamond is the hardest known mineral, which is a physical property of the mineral.
Diamond is the hardest mineral known.
Diamond
Diamond is the hardest mineral known.
Diamond is the hardest mineral known.
Diamond is the hardest known mineral.