Nigerian Pink: Faceting Design Diagram
Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Nigerian Pink".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Nigerian Pink (MC40.JRG)
By Jeff R. Graham
Copyright 1999
76.5% Light Return
Angles for R.I. = 1.62
52 facets + 15 facets on girdle = 67
3-fold, mirror-image symmetry
96 index
L/W = 1.016 T/W = 0.707 T/L = 0.696
P/W = 0.384 C/W = 0.163
H/W = (P+C)/W+0.02 = 0.567
P/H = 0.677 C/H = 0.288
Vol./W^3 = 0.198
Addition # 4 - This is designed for light colored stones, it has a lot of sparkle and depth for improving dispersion and color. The light return on this is better than the ray trace says, and it has a very nice pattern, 1cts+. Cut this in R.I. 1.62 to 1.76 without changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
