Sparkles: Faceting Design Diagram

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


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

Sparkles (B24.JRG)
By Jeff R. Graham
Copyright 2001
87.1% Light Return
Angles for R.I. = 1.62
85 facets + 6 facets on girdle = 91
6-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.448 T/L = 0.388
P/W = 0.488 C/W = 0.256
H/W = (P+C)/W+0.02 = 0.764
P/H = 0.639 C/H = 0.335
Vol./W^3 = 0.336

Addition # 5 - This needs to be cut in light material to get the best effect. It has a lot of life and works very well in Danburite. The crown can be hard to cut on a smaller stone because there are a lot of facets that need to meet. This works in R.I. 1.62 to 1.93 (87.5%) with no changes.

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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