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".

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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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