Faceting Design Diagram: Turbulent Times – Feldspar – Bytonite, Labradorite, Spectrolite, Orthoclase


Sunstone (Feldspar, Bytonite, Labradorite, Spectrolite, Orthoclase)

Turbulent Times Jeff Graham Facet Design

Turbulent Times Jeff Graham Facet Design

Turbulent Times (SUN22.JRG)
By Jeff R. Graham
Copyright 2006
76.1% Light Return
Angles for R.I. = 1.54
51 facets + 10 facets on girdle = 61
5-fold, mirror-image symmetry
80 index
L/W = 1.000 T/W = 0.541 T/L = 0.541 P/W = 0.517
C/W = 0.215 H/W = (P+C)/W+0.02 = 0.752 P/H = 0.688 C/H = 0.286 Vol./W^3 = 0.285

Addition # 11 – Cut in refractive indexes 1.54 to 2.14 with no changes. This is designed for lightly saturated rough and works in any color. I like it in Beryl and light colored watermelons. This is not complicated and cuts easily. Note: The girdle can be cut in first and the P1 cut to meet so that center point is not needed and it saves rough.

Turbulent Times Jeff Graham Facet Design

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

About the author
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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