Diamond Star : Faceting Design Diagram

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


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

Diamond Star (CHECK31.JRG)
By Jeff R. Graham
Copyright 2001
87% Light Return
Angles for R.I. = 1.62
49 facets + 6 facets on girdle = 55
16-fold, mirror-image symmetry
120 index
L/W = 1.143 T/W = 0.321 T/L = 0.281
P/W = 0.517 C/W = 0.193
H/W = (P+C)/W+0.02 = 0.730
P/H = 0.709 C/H = 0.264
Vol./W^3 = 0.257

Addition # 6 - L/W is critical on this one, otherwise the diamonds on the top can be a pain to line up. Other than that it cuts easily and is a very unusual design.

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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