Tumbler: 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 "Tumbler"


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

eff Graham Gemstone Facet Design

 Jeff Graham Gemstone Facet Design


Tumbler (MIR78.GJRG)
By Jeff R. Graham
Copyright 2005
80.8% Light Return
Angles for R.I. = 1.62
64 facets + 16 facets on girdle = 80
8-fold symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.259
H/W = (P+C)/W+0.02 = 0.714 P/H = 0.609 C/H = 0.363
Vol./W^3 = 0.212




Addition # 10 - This is fast and fun to cut, the flash is really very pretty. I prefer this in light saturations. On large stones a table can be cut. Try this in some earrings, they are striking. This is a nice change from a round brilliant.


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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