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 »  Home  »  Diamond Grading  »  Visible Effects of Painting & Digging on Superideal Diamonds  »  Appendix C.  Performance Comparisons
Visible Effects of Painting & Digging on Superideal Diamonds
by Brian Gavin | Published  12/09/2006 | Diamond Grading
Appendix C.  Performance Comparisons
0. Normal Indexing :  Values nominal


1A. Crown-Only Painting to 6° :  Values Nominal


1A. Crown-Only Digging to 6° :  Reduction in light return


2A. Pavilion-Only Painting to 6° :  Major Reduction in contrast


2B. Pavilion-Only Digging to 6° :  Reduction in light return


3A. Crown & Pavilion Painting 6° :  Major reduction in contrast


3B.  Crown & Pavilion Digging to 5° :  Severe reduction in light return


Crown & Pavilion Digging to 11° :  Reduction in light return.  Severe reduction in contrast.


Crown Painted to 11°, Pavilion Dug to 11° :  Major reductions in light return and Contrast.


Crown Dug to 11°, Pavilion Painted to 11° :  Major reductions in light return and Contrast.


 

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