Brilliant Square: 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 "Brilliant Square"


Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)

Brilliant Square (MIR37.JRG)
By Jeff R. Graham
Copyright 2004
91.6% Light Return
Angles for R.I. = 1.62
57 facets + 8 facets on girdle = 65
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.325 T/L = 0.325
P/W = 0.466 C/W = 0.189
H/W = (P+C)/W+0.02 = 0.675
P/H = 0.691 C/H = 0.279
Vol./W^3 = 0.272

Addition # 9 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is fast and not hard to cut. Note: The C4 tier cuts to the corners at 96-24- 48-72, the facets do not point, just cut them evenly. This is great in about any material and I like it in all colors.

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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