Mohs Scale 4-10 Hardness Pencils - Set of 7 : Mahavir Gems: Gemstone Hardness Pencils, Mohs Scale Hardness Pencils - Set of 7 - From Mahavir Gems, bringing you a great range of gemmological instruments you can rely on.
4 - FLUORITE
5 - APATITE
6 - ORTHOCLASE
7- QUARTZ
8- TOPAZ
9- CORUNDUM
10- DIAMOND
4 -FLUORITE
5 -APATITE
6 -ORTHOCLASE
7-QUARTZ
8-TOPAZ
9-CORUNDUM
5 - APATITE
6 - ORTHOCLASE
7- QUARTZ
8- TOPAZ
9- CORUNDUM
10- DIAMOND
Mohs Scale 4-10 Hardness Pencils - Set
of 7 Pencils
of 7 Pencils
Product Code: HARDPENC410
Availability: 1
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Check the Price Offered & discounts available
This set of 7 hardness pencils covers
the range of Moh's Scales from 4 through to 10.
the range of Moh's Scales from 4 through to 10.
The set comes in an attractive velvet
carry box.
carry box.
Package contents:
1 Pack = 7 pcs of Hardness pencils: 4 -
10
10
NOTE:
1. English user instructions available.
2. Make in India
Hardness pencils are pencils with a tip made
of one of the minerals on Moh's scale.
of one of the minerals on Moh's scale.
4 -FLUORITE
5 -APATITE
6 -ORTHOCLASE
7-QUARTZ
8-TOPAZ
9-CORUNDUM
10-DIAMOND
These pencils are used to try and
scratch a stone and observe if the pencils can scratch the gem. Since this is a
destructive method (it leaves a scratch), this test is mostly used on pieces of
rough or on a inconspicuous place on the gemstone. It is also suitable for
various other geological, construction, as well as industrial test &
research purposes.
scratch a stone and observe if the pencils can scratch the gem. Since this is a
destructive method (it leaves a scratch), this test is mostly used on pieces of
rough or on a inconspicuous place on the gemstone. It is also suitable for
various other geological, construction, as well as industrial test &
research purposes.
The gemstone is tested with a pencil of
low hardness (starting at 4 or lower no. of hardness pencil) to try to put a
tiny scratch on the stone without applying pressure. If no scratch is observed,
one repeats this process with a pencil of higher hardness no. (in this case one
can use the no.5) and so on until one arrives at the pencil that is able to put
a tiny scratch on the stone.
low hardness (starting at 4 or lower no. of hardness pencil) to try to put a
tiny scratch on the stone without applying pressure. If no scratch is observed,
one repeats this process with a pencil of higher hardness no. (in this case one
can use the no.5) and so on until one arrives at the pencil that is able to put
a tiny scratch on the stone.
For instance, if one could not scratch
the mineral with pencil no.5 but it would leave a scratch with pencil no.6 the
hardness of the mineral must be between 5 and 6 on Mohs scale.
the mineral with pencil no.5 but it would leave a scratch with pencil no.6 the
hardness of the mineral must be between 5 and 6 on Mohs scale.
For more information on Moh's Scale
click this link to go to our Resources section
click this link to go to our Resources section
Industrial Uses
To determine the hardness of a concrete
surface relative to Mohs’ hardness scale you must perform a scratch test. Start
by using the lowest number pick and continue up the scale until the concrete
begins to scratch and that is your numeric number of hardness relative to the
Mohs’ scale.
surface relative to Mohs’ hardness scale you must perform a scratch test. Start
by using the lowest number pick and continue up the scale until the concrete
begins to scratch and that is your numeric number of hardness relative to the
Mohs’ scale.
1 = Softest 10 = Hardest
Tooling Reference to Mohs’ hardness
scale:
scale:
2-3: Hard Tooling
3-5: Hard Tooling
5-7: Medium Tooling
7-9: Medium Tooling
Mohs Hardness Tester For Concrete Floor
Surface
Surface
Hardness Tester For Concrete Floor
Surface, Industrial uses,
Surface, Industrial uses,
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#Floor #Surface #Industrial #uses
#Floor #Surface #Industrial #uses
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