Mask Rectangle: 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 "Mask Rectangle".


Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

Mask Rectangle (QTZ43.JRG)
By Jeff R. Graham
Copyright 1995
70% Light Return
Angles for R.I. = 1.54
61 facets + 12 facets on girdle = 73
2-fold, mirror-image symmetry
96 index L/W = 1.402
T/W = 0.900 T/L = 0.642
P/W = 0.596 C/W = 0.259
H/W = (P+C)/W+0.02 = 0.875
P/H = 0.681 C/H = 0.296
Vol./W^3 = 0.545

Gram Book 1 - The P10,P11,P12 facets can be cut in another order if you want. I thought this would work best, because once the girdle is cut the others meet it and can be cheated, so long as they are even… This is a hard one to cut the first couple of times, once you get it, it's easier. This works in Tourmaline and Topaz. Not for the novice…

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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