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Hardness Pencil with Material of Natural stone for getting Hardness of gemstone
Hardness Pencil with Material of Natural stone for getting Hardness of gemstone
Specifications
Brand Name :
Fable
Model Number :
FMH-5
Place of Origin :
Guangdong, China
MOQ :
1 set
Payment Terms :
Western Union, T/T, or Paypal
Supply Ability :
1000 set per month
Delivery Time :
5 days
Packaging Details :
A set in a gift box package
Price :
negotiation
Material :
Natural Stone
Hardness Range :
5 to 9
Number 5 :
Apatite
Number 6 :
Orthoclase
Number 7 :
Quartz
Number 8 :
Topaz
Number 9 :
Corundum
Product Name :
hardness testing pencil
Description

Hardness Pencil with Material of Natural stone for getting Hardness of gemstone

Model No: FMH-5

Specification:

Technical Parameter

Size of the piece

10cm

Hardness Range

From 5 to 9

Material

Natural stone

Power supply

No need

Description and Usage:

Those minerals are mounted in five metal pole respectively,use the corner of those mineral to scratch the gemstone,you will get the hardness according to the nick you scratch,if there is a nick after you scratched,the sample's hardness is lower than the standard hardness pencil;if there is no nick after you scratched,that means the sample's hardness is higher than the standard hardness pencil.

Matters need attention:

1.use the indirect-vision method to estimate the hardness of the sample.

2.find a inconspicuous place,use the talc-l or plaster-2 to scratch the sample,if can't do,that means the sample's hardness is higher than the standard hardness pencil,so pls use the higher pencil to scratch,repetitive operation,if there is a shadow nick,that means the sample's hardness is amoust the same with the standard hardnedd pencil,then use the higher hardness pencil to scratch the gem,if there is a deep nick,means sample's hardness is lower than the standard hardness pencil.so in this way,we can get the hardness of gem or the scope of hardness.

3.when you scratch,don't too heave or too light,just proper vigor.

4.direct test method cost damage to the gem,so pls use it proper.generally speaking,we won't use this method to the finished gem.

Applications: Gemological Laboratory, Gemology school, Jewelry industrial

Hardness Pencil with Material of Natural stone for getting Hardness of gemstoneHardness Pencil with Material of Natural stone for getting Hardness of gemstone

Product tags

natural rough diamond

,

rough natural diamond

,

gemstone hardness scale
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Hardness Pencil with Material of Natural stone for getting Hardness of gemstone

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Product Detail
Brand Name :
Fable
Model Number :
FMH-5
Place of Origin :
Guangdong, China
MOQ :
1 set
Payment Terms :
Western Union, T/T, or Paypal
Supply Ability :
1000 set per month
Contact Supplier
Hardness Pencil with Material of Natural stone for getting Hardness of gemstone

Shenzhen Fable Jewellery Technology Co., Ltd.

Site Member
11 Years
Since 2006
Business Type :
Manufacturer
Main Products :
Gem Testing Instruments, Gem Testing Kit, Gem Refractometer
Total Annual :
>5000000
Employee Number :
>50
Certification Level :
Site Member
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