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


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

“CC” Pounded Shield (MC27.JRG)
By Jeff R. Graham
Copyright 1998
82.1 % 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 = 0.405 C/W = 0.137
H/W = (P+C)/W+0.02 = 0.562
P/H = 0.720 C/H = 0.244
Vol./W^3 = 0.425

Addition # 4 – This is not easy, it takes experience, I designed it as a necklace stone and usually use trillions on the short ends. It can be cut in another order, it has a nice “V” shaped flash when rocked, any material 1cts+. NOTE: Omit P8 if cutting a small stone.


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.