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Diamond is the only mineral that has the same hardness as corundum, which is the second hardest natural mineral on the Mohs scale after diamond. Both corundum and diamond have a hardness of 9 on the Mohs scale.

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1y ago

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What is the only mineral that can scratch corundum?

Diamond is the hardest mineral and is the only one that can scratch corundum. but in my opinion corundum will scratch corundum any mineral of the same hardness will scratch the other !


What is the hardness of the ruby?

Ruby, a variety of the mineral corundum, has a hardness of 9 on the Mohs scale of mineral hardness.


What mineral can corundum scratch?

Corundum can scratch all minerals except diamond, making it the second hardest mineral on the Mohs scale with a hardness of 9. Diamond, with a hardness of 10, is the only mineral that can scratch corundum.


What is a mineral with a hardness of 9?

Corundum is a mineral with a hardness of 9 on the Mohs scale. It is used as an abrasive and is also the mineral form of aluminum oxide. Sapphire and ruby are gem varieties of corundum.


Could corundum scratch topaz?

Yes. Corundum will scratch topaz and every other mineral with a hardness of 9 or lower on the Mohs hardness scale.


Can corundum scratch topaz?

Yes. Corundum will scratch topaz and every other mineral with a hardness of 9 or lower on the Mohs hardness scale.


Is corundum harder than diamond?

No. Diamond is the hardest mineral. It measures 10 on the Mohs scale: Corundum measures 9, which is less hard than diamond, as below.


Can quartz scratch corundum?

According to the Mohs scale of mineral hardness, quartz (7) will not scratch any mineral with a higher number on the scale. Corundum is listed at 9. Therefore quartz will not scratch corundum, but corundum can scratch quartz.


Can corundum be scratched by a nail?

No, corundum is a very hard mineral, scoring a 9 on the Mohs scale of hardness. A fingernail typically ranks around 2.5 on the scale, so it would not be able to scratch corundum.


Is corundum metallic?

No, corundum is not metallic. It is a crystalline form of aluminum oxide with high hardness and is commonly known as the mineral sapphire when it is in its blue color and ruby when it is red.


What is a mineral that fluorite can't scratch?

Fluorite is unable to scratch feldspar, quartz, corundum, diamond, or any other mineral with a Mohs hardness greater than 4.


What is feldpars hardness?

Orthoclase comes in as 6 on Mohs scale of mineral hardness:- Talc, Gypsum, Calcite, Fluorite, Apatite, Orthoclase, Quartz, Topaz, Corundum, Diamond;