Tejas: Faceting Design Diagram


Successful tips, details and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Tejas".

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

Tejas Jeff Graham Facet Design 1Tejas Jeff Graham Facet Design 2

Tejas (DOME42.JRG)
By Jeff R. Graham
Copyright 2007
92% Light Return
Angles for R.I. = 1.62
51 facets + 10 facets on girdle = 61
5-fold, mirror-image symmetry
80 index
L/W = 1.000 T/W = 0.200 T/L = 0.200 P/W = 0.384 C/W = 0.257
H/W = (P+C)/W+0.02 = 0.661 P/H = 0.581 C/H = 0.389
Vol./W^3 = 0.198

PAVILION

CROWN

Addition # 13 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is very bright and works best in medium saturated material. This is not hard to cut and the shallow dome makes an interesting effect.

Tejas Jeff Graham Facet Design 3

Detailed faceting instructions by Jeff Graham available at The Rock Peddler


Jeff R. Graham

The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.

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