5 Blossom: Faceting Design Diagram
Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "5 Blossom".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
5 Blossom (TLINE16.JRG)
By Jeff R. Graham
Copyright 1995
78% Light Return
Angles for R.I. = 1.62
86 facets + 10 facets on girdle = 96
5-fold, mirror-image symmetry
80 index
L/W = 1.051 T/W = 0.532 T/L = 0.506
P/W = 0.468 C/W = 0.211
H/W = (P+C)/W+0.02 = 0.699
P/H = 0.669 C/H = 0.302
Vol./W^3 = 0.267
Addition # 1 - Note 80 index. It helps to rough in the table before you cut the C5 facets, that way it's easier to get things to meet. NOTICE 80 index, this design is a nice change and it will fit a standard mounting, any material, 1-8cts. Cut in refractive indexes 1.62 to 1.93 (83.4%) 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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