Sparkles: Faceting Design Diagram
Successful tips, details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Sparkles".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Sparkles (B24.JRG)
By Jeff R. Graham
Copyright 2001
87.1% Light Return
Angles for R.I. = 1.62
85 facets + 6 facets on girdle = 91
6-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.448 T/L = 0.388
P/W = 0.488 C/W = 0.256
H/W = (P+C)/W+0.02 = 0.764
P/H = 0.639 C/H = 0.335
Vol./W^3 = 0.336
Addition # 5 - This needs to be cut in light material to get the best effect. It has a lot of life and works very well in Danburite. The crown can be hard to cut on a smaller stone because there are a lot of facets that need to meet. This works in R.I. 1.62 to 1.93 (87.5%) with no changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
