4-Way Stop Cushion: Faceting Design Diagram

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

4-Way Stop Cushion (CHECK4.JRG)
By Jeff R. Graham
Copyright 2000
86.4% Light Return
Angles for R.I. = 1.73
59 facets + 16 facets on girdle = 75
2-fold, mirror-image symmetry
72 index
L/W = 1.207 T/W = 0.405 T/L = 0.336
P/W = 0.470 C/W = 0.263
H/W = (P+C)/W+0.02 = 0.753
P/H = 0.624 C/H = 0.349
Vol./W^3 = 0.357

Addition # 6 - The crown on this can be tough to cut if your L/W is not right. It does take some cheating (like most checkerboard tops). This has very nice light return and has a fairly low number of facets. It works well in Spinel, Sapphire, Peridot and man-made materials.

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler