How to you test for diamonds?

  • Thread starter darkelf
  • Start date
  • #1
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0
Hello,

I would like to know how one can confirm that a material is diamond apart from confirming its crystal structure. I tried the copper cooling test and it passed, are they any other tests to confirm? What acid test would be best to confirm?

Thank you
 

Answers and Replies

  • #2
11
0
diamonds burn in Oxygen.
 
  • #3
alxm
Science Advisor
1,848
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Spectroscopy.
 
  • #4
5,441
9
Hardness (scratch test)
 
  • #5
4,254
1
I prefer the hammer test. Don't use an new anvil were you do precision work. Smashing a diamond can ruin the surface.


The index of refraction of diamond is about 2.4. Cubic zirconia is about 2.2.
 
Last edited:
  • #6
turbo
Gold Member
3,147
51
Just Google on Diamond Tester. They are common and relatively inexpensive.
 
  • #7
5,441
9
Specific gravity is another good test.
 
  • #8
MATLABdude
Science Advisor
1,657
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These are all rather 'macroscopic' test methods, and based on some of the questions / comments darkelf has posted in the past (mostly regarding microprocessing / surface coatings), I would hazard that this isn't the case. Having said that, I have no idea either, aside from what the other posters have mentioned (hardness testing, spectroscopy, conductivity--though this might be difficult to distinguish from graphite or other carbon allotropes).
 
  • #9
alxm
Science Advisor
1,848
9
Raman spectroscopy is used all the time for diamond surface films.
It's the usual way to characterize CVD diamonds.
 

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