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)
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
PAVILION
CROWN
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
