Faceting Design Diagram: High Fashion – Tourmaline – Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite


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

High Fashion (MIR32.JRG)
By Jeff R. Graham
Copyright 2004
88.2% Light Return
Angles for R.I. = 1.62
46 facets + 5 facets on girdle = 51
5-fold, mirror-image symmetry
80 index
L/W = 1.051 T/W = 0.371 T/L = 0.353
P/W = 0.448 C/W = 0.215
H/W = (P+C)/W+0.02 = 0.683
P/H = 0.656 C/H = 0.315
Vol./W^3 = 0.229

Addition # 9 – This is a Mirage cut because it only has 51 facets and when finished will look like 150 facets. As you can see, this is a fairly traditional cut and not hard to do. Use light to medium saturated material and cut in refractive indexes 1.62 to 1.76 with no changes.


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.