If moissanite is almost as hard as diamond why isn’t there moissanite blades if moissanite is cheaper?
In: 4910
It’s not almost as hard. Diamond has a hardness of 100 GPa. Silicon carbide (which is the compound in the mineral Moissanite) has a hardness between 20 and 30 GPa, depending on the load and purity.
People think some minerals, like Corundum (alumina) and Moissanite (SiC), are almost as hard as diamond as they have a hardness of 9 and 9.25, respectively, on the [Mohs hardness scale](https://en.m.wikipedia.org/wiki/Mohs_scale). However, the Moh’s scale is [not linear](https://geology.com/minerals/photos/mohs-vickers-comparison-scale.gif), especially towards the higher end.
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