Flash’n Diamonds: 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 "Flash'n Diamonds"
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Flash'n Diamonds (CHECK62.JRG)
By Jeff R. Graham
80.1% Light Return
Angles for R.I. = 1.62
45 facets + 16 facets on girdle = 61
2-fold, mirror-image symmetry
L/W = 2.001 T/W = 0.536
T/L = 0.268 P/W = 0.472 C/W = 0.208
H/W = (P+C)/W+0.02 = 0.699
P/H = 0.674 C/H = 0.297
Vol./W^3 = 0.571
Addition # 8 - This is designed for crystal Tourmaline… There is not much that can be done with long crystals besides a rectangle, this is a nice change of pace. This works well in about any color. Cut in refractive indexes 1.62 to 1.93 with no changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
Jeff R. Graham
The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.
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