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

Shenzhen Fable Jewellery Technology Co., Ltd.

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

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

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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


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