Faceting Design Diagram: Morph Square – Reflector – Tourmaline – Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite


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

Morph Square – Reflector (MC5.JRG)
By Jeff R. Graham
Copyright 1999
89.6% Light Return
Angles for R.I. = 1.62
20 facets + 8 facets on girdle = 28
2-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.158
H/W = (P+C)/W+0.02 = 0.613 P/H = 0.709
C/H = 0.258 Vol./W^3 = 0.260

NOTE: very easy to cut, the corners just float in and can be larger or smaller depending on your rough. Cut the crown until the six steps look even. Be careful when cutting 24-72, take care in polishing, 1/2cts+. Works in Topaz also…

 

 

 


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.