Line Point Triangle: Faceting Design Diagram
Helpful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Line Point Triangle"0
Spinel (Red, Pink, Lavender, Green, Blue, Orange, Violet)
Line Point Triangle (SPINEL1.JRG)
By Jeff R. Graham
87.2% Light Return
Angles for R.I. = 1.71
31 facets + 12 facets on girdle = 43
3-fold, mirror-image symmetry
L/W = 1.104 T/W = 0.496 T/L = 0.449
P/W = 0.481 C/W = 0.188
H/W = (P+C)/W+0.02 = 0.689
P/H = 0.698 C/H = 0.273
Vol./W^3 = 0.211
Addition # 2 - This triangle cuts easily and makes a nice stone in about any type of material, 1/2-4cts. I like it in light colored Garnet and Sapphire. Cut in refractive indexes 1.71 to 2.14 with no changes. This design is deceptive, it is really quite nice.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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