Sam’s Ray #1: Faceting Design Diagram

Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)

Sam's Ray #1 (MC20.JRG)
By Jeff R. Graham
Copyright 1999
76.9% Light Return
Angles for R.I. = 1.73
15 facets + 6 facets on girdle = 21
1-fold, mirror-image symmetry
96 index
L/W = 2.063 T/W = 1.780 T/L = 0.863
P/W = 0.424 C/W = 0.130
H/W = (P+C)/W+0.02 = 0.573
P/H = 0.739 C/H = 0.226
Vol./W^3 = 0.388

Addition # 4 - This is another design for set cutting, it is fast and simple to cut. It can be varied, in size to match the flat side(s)of the stone it's sitting next to(hex for example). The entire stone flashes from end to end with a broad ray like pattern. Cut this in R.I. 1.73 to 1.93 without changes.

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler