North Star: Faceting Design Diagram
Tips, details, and a guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "North Star".0
North Star (QTZ16.JRG)
By Jeff R. Graham
75% Light Return
Angles for R.I. = 1.54
137 facets + 16 facets on girdle = 153
8-fold, mirror-image symmetry
L/W = 1.000 T/W = 0.459 T/L = 0.459
P/W = 0.437 C/W = 0.181
H/W = (P+C)/W+0.02 = 0.638
P/H = 0.685 C/H = 0.283
Vol./W^3 = 0.215
Gram Book 1 - This stone is a mixed cut and it looks harder than it really is. It is important to cut the steps to the correct proportions (but not hard). Cut this design in about any material, 1-12cts. I prefer a larger stone and like it in medium/light colors, so the effect of the pattern shows. Cut in refractive index 1.54 to 2.14 (93.7%) with no changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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