Hardness

Card Set Information

Author:
gemszar
ID:
90288
Filename:
Hardness
Updated:
2011-06-12 13:23:19
Tags:
Gemology
Folders:

Description:
Ability to resist scratches & abrasions
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  1. Diamond?
    10
  2. Corrundum?
    9
  3. Topaz?
    8
  4. Quartz?
    7
  5. Feldspar?
    6
  6. Apatite?
    5
  7. Flourite?
    4
  8. Calcite?
    3
  9. Gypsum?
    2
  10. Talc?
    1

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