Faceting Design Diagram: Turban – Sapphire / Corundum – Ruby, Ceylon, Padparadschah, Pink, Yellow, Green

Sapphire / Corundum (Ruby, Ceylon, Padparadschah, Pink, Yellow, Green)

Turban (B18.JRG)
By Jeff R. Graham
Copyright 2001
86% Light Return
Angles for R.I. = 1.76
51 facets + 12 facets on girdle = 63
2-fold, mirror-image symmetry
96 index
L/W = 1.492 T/W = 0.908 T/L = 0.609
P/W = 0.649 C/W = 0.170
H/W = (P+C)/W+0.02 = 0.839 P/H = 0.774
C/H = 0.203 Vol./W^3 = 0.435

Updated August 2003

Addition # 5 – This is a nice stone and should be cut in light colored material, it is really a “Money Cut”. It works well for Zircon and light Garnet (like mint). I actually designed it for light Garnet, they are seldom large, but I wanted a Barion that would help increase the color and dispersion. Notice the low number of actual facets, it is designed for smaller stones. Man-made material works well as long as it is not dark. A L/W 1.49 is a good idea, if you are off the breaks will look stair stepped at the girdle. NOTE: Cut the table then C8 to meet.

Random – Cosine – ISO

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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