Saturday, September 19, 2020

What is External Observation in Gemology?

 External   Observation

  Rough:-

  1. Horizontal  Striations 
  2. Vertical  Striations
  3. Trigons  Striations
  4. Etch Pits 
  5. Pits
  6. Terrace Like Mark
  7. Cavity
  8. Material Emeded in cavity
  9. Facture


Cut & Polish

  1. Scratch
  2. Polishig Lines
  3. Abraded facet Edges
  4. Chipping
  5. Cleavage
  6. Facture
at
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Location: Lahore, Punjab, Pakistan

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