diamond appraisal

Bruting - (Girdling, "rounding-up")

 

  • Naturals left to demonstrate that retained maximum weight from rough.
  • Bearding often results in bruting
  • Some fancy shapes are also bruted (no square or rectangular shapes.)
  • Faceting - <Blocking & Brillianteering.>

     

    1. DOP and TANG (spoon & fork) which holds the stone against "lap" (polishing wheel)
    2. Blocking <as known as "Eight Square">
    • 8 crown facets (mains) (bezel)
    • 8 pavillion facets (mains) (pavillion) & culet and table.

         3. Brillianteering

    • 8 stars
    • 16 upper girdles
    • 16 lower girdles
    • Minor errors of blocker corrected.

    *Last: Inspect and boil to clean diamond.