Red Block: Faceting Design Diagram

Successful tips, details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Red Block"


Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)

Red Block (MC15.JRG)
By Jeff R. Graham
Copyright 1999
87.6% Light Return
Angles for R.I. = 1.73
35 facets + 8 facets on girdle = 43
2-fold, mirror-image symmetry
96 index
L/W = 1.330 T/W = 1.047 T/L = 0.787
P/W = 0.464 C/W = 0.127
H/W = (P+C)/W+0.02 = 0.611
P/H = 0.759 C/H = 0.208
Vol./W^3 = 0.442

Addition # 4 - This can be cut in several different cutting orders, and is not an easy design (because of the keel). I think doing a 1.33 L/W preform is a good start. The P6 can be deeper or shallower depending on the rough, the C2 would have to change, light to medium material 2cts+. This is designed for yield, which is why the Pavilion is so deep, it will darken the finished stone. Cut this in R.I. 1.73 to 2.14 without 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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