Faceting Design Diagram: Crystal Lilly – Tourmaline, Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite

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

Jeff Graham Facet Design


Crystal Lilly (MIR53.JRG)
By Jeff R. Graham
Copyright 2005
87.9% Light Return
Angles for R.I. = 1.54
49 facets + 8 facets on girdle = 57
8-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.266 T/L = 0.266 P/W = 0.450 C/W = 0.232 H/W = (P+C)/W+0.02 = 0.702 P/H = 0.641 C/H = 0.330 Vol./W^3 = 0.263


Addition # 10 – This design looks quite different than the “Floating Lilly” design. It is surprising what a few changes can do. Cut this in about any material and color, it’s easy and pretty fast to do. Cut in refractive indexes 1.54 to 2.14 with no changes.


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.