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Answered 2009-01-29 23:04:58

Topaz is #8 on the Mohs scale of mineral hardness.

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What is the mohs hardness of the topaz?

Topaz is the mineral that defines 7 on the Mohs scale.

What is topaz's number on the mohs scale?

Topaz is number 8 on the Mohs scale.

Is a topaz a mineral?

Yes Topaz is a mineral. On the Mohs. Scale it is 8 for its hardness.

What is the approximate hardness of topaz?

Topaz ranks 8 on the Mohs scale for hardness.

How hard is the aquamarine birthstone on the MOHs scale of hardness?

Aquamarine is between 7(Quartz) and 8(Topaz) on MOHs scale of hardness. But, Aquamarine is closer to 8(Topaz) than 7(Quartz). :-)

Is calcite harder than topaz?

no,calcite is ranked number 3 on the mohs scale of hardness. topaz is ranked number 8 on mohs scale of hardness. 10 is the hardest(diamond) 1 is the softest(talc) look it up!

Can gypsum scratch topaz?

No. Gypsum has a hardness on the Mohs scale of 2. Topaz has a hardness on the Mohs scale of 8. This means that topaz ranks much harder than gypsum and that gypsum cannot scratch topaz. Please do not refer to these numbers as absolute hardness. This does not mean that topaz is 4 times as hard as gypsum since they are ranked 8 and 2. The Mohs scale only designates a hardness scale of 1 through 10 so that geologists and mineralogists in the field have a quick way of determining a mineral's identity or eliminating possible options of what the mineral may be.

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.

Will the mineral topaz scratch quartz or will quartz scratch topaz Why?

topaz has a hardness of 8 on the mohs hardness scale, quartz has a hardness of 7. topaz will be able to scratch quartz, but quartz can never scratch topaz.

How is the hardness range for a mineral determined?

By comparing its ability to scratch or be scratched by minerals with a known hardness on the Mohs hardness scale. For instance, if a mineral can scratch quartz (Mohs-7), but is scratched by topaz (Mohs-8), its hardness is somewhere between 7-8 on the Mohs scale.

Is topaz harder than a diamond?

A topaz has a hardness factor of 8 on the Mohs scale, whereas a diamond is a 10.

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.

Fayalite can scratch orthoclase but not topaz?

Fayalite has a hardness of 6.5-7 on the Mohs scale. Therefore it scratches orthoclase (hardness 6), but not topaz (hardness 8).

What is the name of the scale that measures the hardness of mineral?

The Mohs scale. # Talc # Gypsum # Calcite # Fluorite # Apatite # Feldspar # Quartz # Topaz # Corundum # Diamond The Mohs scale, however, is an purely ordinal scale. For example, corundum (9) is twice as hard as topaz (8), but diamond (10) is almost four times as hard as corundum. Check the related link for more info.

Can fayalite scratch orthoclase but not topaz?

Yes..in a high definition the Fayalite can be able to scratch the Orthoclase but not the topaz. If you look on the Mohs scale, the Orthoclase is not harder than the Topaz. So, in clear words, yes!!

Are Diamonds the only substance that can scratch glass?

No. Hardness is measured on the Mohs Scale, named after German Friedrich Mohs. On this scale Talc (the softest) measures 1, while Diamond (the hardest) measures 10. Glass has a Mohs' scale hardness of around 5.5, so anything above that will have the ability to scratch glass. For example, quartz (Mohs 7), hardened steel (Mohs 8), corundum (rubies and sapphires, Mohs 9),or diamond (Mohs 10). The Mohs scale is purely an ordinal scale, expressing relative hardness in a simplistic way. Carborundum (Mohs 9) is twice as hard as Topaz (Mohs 8), but diamond (Mohs 10) is four times harder than arborundum.

The 3 hardest minerals?

On the Mohs relative hardness scale, the top three from the hardest down are diamond, corundum, topaz.

Where is diamond on the Mohs scale?

it is number 10 on the mohs scale

How hard is platinum on the mohs scale?

what is platnum on the mohs scale

What is tantalum is the mohs scale?

Tantalum is 6.5 on the Mohs scale,

What does mohs scale not measure?

Mohs measures relative hardness (quartz is harder than orthoclase; topaz is harder than quartz), but it doesn't accurately tell HOW MUCH harder something is than something else. There is another scale, called the Rockwell, which does this.

What is fluorite on the mohs hardness scale?

Fluorite is 4 on the Mohs scale.

5 why is Gypsum is a 2 on Mohs hardness scale while topaz is an 8 Can gypsum scratch topaz?

No, gypsum cannot scratch topaz. Minerals with a higher number on the Moh's Hardness Scale can scratch minerals that are lower-numbered, but lower numbers can't scratch higher numbers. A mineral would have to have a number higher than an 8 on the Moh's hardness scale in order to scratch topaz.

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