Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
Quartz has a hardness of 7 on the Mohs scale, making it relatively hard and durable.
Minerals that have a hardness of 7 on the Mohs scale include quartz, beryl (which includes emerald and aquamarine), and garnet. These minerals are relatively hard and can scratch materials with a lower hardness rating.
Friedrich Mohs' hardness scale is simply known as the Mohs Scale of Mineral Hardness.
The mineral hardness scale is called the Mohs scale of mineral hardness, named after German geologist Friedrich Mohs who created it in 1812.
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
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9 on the mohs scale
Quartz has a hardness of 7 on the Mohs scale, making it relatively hard and durable.
On the Mohs scale, 6.5 to 7.0.
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Minerals that have a hardness of 7 on the Mohs scale include quartz, beryl (which includes emerald and aquamarine), and garnet. These minerals are relatively hard and can scratch materials with a lower hardness rating.
Iodine is not recognized as a mineral, and therefore is not assigned a number on the Mohs Scale of mineral hardness.
A fingernail has a hardness of around 2.5 on the Mohs hardness scale, which means it can be easily scratched by materials with a higher hardness level.
The hardness of uranium is 6 on the Mohs scale; not so hard.
Glass is about 6-6.5
look it up on the mohs scale