Plus Motive: 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 "Plus Motive".
Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)
Plus Motive (GNETP28.JRG)
By Jeff R. Graham
Copyright 1996
75% Light Return
Angles for R.I. = 1.73
77 facets + 8 facets on girdle = 85
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.417 T/L = 0.417
P/W = 0.430 C/W = 0.212
H/W = (P+C)/W+0.02 = 0.663
P/H = 0.650 C/H = 0.320
Vol./W^3 = 0.254
Gram Book 1 - This design cuts fairly easy. Watch the P6 meet, it's on the apex/point formed by the P4,P5 facets. Cut in a light to medium material,(Grossular is good) 1-8cts. Cut in refractive indexes 1.73 to 2.14 (83.9%) 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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