Crystal: Faceting Design Diagram

Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Crystal".


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

Crystal (CHECK29.JRG)
By Jeff R. Graham
Copyright 2001
90.6% Light Return
Angles for R.I. = 1.54
27 facets + 8 facets on girdle = 35
2-fold, mirror-image symmetry
96 index
L/W = 1.497 T/W = 0.351 T/L = 0.235
P/W = 0.451 C/W = 0.205
H/W = (P+C)/W+0.02 = 0.675
P/H = 0.667 C/H = 0.303
Vol./W^3 = 0.505

Addition # 6 - This is made for those rather narrow long Tourmaline crystals. This is good for dark ends and darker colors. I left it in refractive index 1.54 for Quartz, although I usually use this design for Tourmaline. The L/W of this can float longer or shorter without causing any problems.

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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