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
78% Light Return
Angles for R.I. = 1.62
86 facets + 10 facets on girdle = 96
5-fold, mirror-image symmetry
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
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