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


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

Muse Jeff Graham Facet Design 1 Muse Jeff Graham Facet Design 2

Muse (DOME7.JRG)
By Jeff R. Graham
Copyright 2007
84.5% Light Return
Angles for R.I. = 1.62
79 facets + 6 facets on girdle = 85
6-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.390 T/L = 0.338 P/W = 0.464
C/W = 0.366 H/W = (P+C)/W+0.02 = 0.849 P/H = 0.546 C/H = 0.431 Vol./W^3 = 0.367

Addition # 13 – This is pretty simple to cut. Cut in light to medium saturated materials. Cut in refractive indexes 1.62 to 1.93 with no changes.

Muse Jeff Graham Facet Design 3

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.