Faceting Design Diagram: Pounded Shield – Tourmaline – Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite


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

Pounded Shield (MC21.JRG) 5.23 carat Tourmaline
By Jeff R. Graham
Copyright 1999
84% Light Return
Angles for R.I. = 1.62
18 facets + 5 facets on girdle = 23
1-fold, mirror-image symmetry
96 index
L/W = 2.000 T/W = 1.667 T/L = 0.834
P/W = 0.430 C/W = 0.137
H/W = (P+C)/W+0.02 = 0.587
P/H = 0.732 C/H = 0.234
Vol./W^3 = 0.458

Addition # 4 – This is easier than the cut corner version, and works better in a smaller stone. It is designed to be used as a necklace stone. It can be cut in another order, I like it in pink Tourmaline, 1ct and up…


Random – Cosine – ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Gram Faceting Archive of Information
This edited version of an article by the late Jeff Graham is part of a special archived informational series from Gram Faceting. Used with permission.