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


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

Rose Bud (CHECK32.JRG)
By Jeff R. Graham
Copyright 2001
88.9% Light Return
Angles for R.I. = 1.62
50 facets + 15 facets on girdle = 65
1-fold symmetry
96 index
L/W = 1.257 T/W = 0.199 T/L = 0.158
P/W = 0.433 C/W = 0.217
H/W = (P+C)/W+0.02 = 0.671
P/H = 0.646 C/H = 0.324
Vol./W^3 = 0.246

Addition # 6 – This can be cut in any refractive index with no changes. I like this one in pink/red. The checkered top on this can be a little confusing to cut the first time. Note; I usually rough in the table before cutting C12.


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.