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


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

Sword Oval (SAP13.JRG)
By Jeff R. Graham
Copyright 1995
77.3% Light Return
Angles for R.I. = 1.76
65 facets + 12 facets on girdle = 77
2-fold, mirror-image symmetry
96 index
L/W = 1.203 T/W = 0.542 T/L = 0.451
P/W = 0.482 C/W = 0.258
H/W = (P+C)/W+0.02 = 0.760
P/H = 0.634 C/H = 0.340
Vol./W^3 = 0.323

Gram Book 1 – This design cuts pretty normal, it makes a nice stone in lighter colored material. It’s got more light return than most ovals, and it’s not too shallow on the crown like some CAD designs, 1-8cts. This works in man- made Sapphire, and Spinel.


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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