
Pickup available from Quicktest (WD18 8JA)
Email us
or call on 01923-220206 for appointment.
Summary
Set of five hardness pencils.
Each 'pencil' has a tip of a different hardness from No.5 to No.9 on the Moe scale of hardness (see 'Further Information').
Is it easy to use?
Yes.
See which will scratch your sample and which will not.
Limitations
Hardness varies from sample to sample, and it can also be different in different directions.
These are for testing minerals, e.g. out in the field. They are not suitable for use on cut gemstone (jewellery) - you scratch the stone, the stone becomes worthless and/or your customer sues you.
Moe
The Moe scale of hardness goes like this:
1 Talk
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond
QUESTIONS & ANSWERS
Have a Question?
Be the first to ask a question about this.