Trip’in: Faceting Design Diagram

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


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

Trip'in (CHECK70.JRG)
By Jeff R. Graham
Copyright 2003 84.3%
Light return Angles for R.I. = 1.62
39 facets + 4 facets on girdle = 43
2-fold, mirror-image symmetry
96 index
L/W = 1.303 T/W = 0.273 T/L = 0.209
P/W = 0.370 C/W = 0.222
H/W = (P+C)/W+0.02 = 0.612
P/H = 0.604 C/H = 0.363
Vol./W^3 = 0.194

Addition # 8 - This needs to be cut in a large stone and can be cut in another order. Notice that I cut the center first and go towards the edges. This is because there are no critical meets at 96-48 and these facets can absorb any slack that you might have. Also this can be cut in variable L/W, just let the outside facets absorb the difference by being larger or smaller. This can be cut in Quartz with no changes 81.2% to 2.14 (85.3%).

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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