PC 21.247

DIAMOND-BACK OCTAGON

Designed by Jim Perkins
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DataVueopen
L/W
100%
Design RI
1.77
H/W
58%
Gear
96
V/W³
0.216
Symmetry
8 (mirrored)
Facets
89
Tiers
9
Crown
8
Pavilion
81

Copyright May 28, 2005. Cut in corundum, CZ, garnet, topaz, tourmaline, spinel, yag or zircon.

Computed performance will vary depending on specific characteristics of your rough, quality of cut and polish and other factors which are unpredictable by the designer. Computed performance using GemRayX @ 120 pixel resolution and 10* head shadow half-angle. ISO=81.1% COS=70.9% DISPERSION=6.3% SCINTILLATION=35.3%. 95.3% REFLECTED BRILLIANCE IF HEAD SHADOW IS NOT CONSIDERED.

Wireframe

DIAMOND-BACK OCTAGON 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
1224364860728496
CUT TO SIZE.
P142.00°
1224364860728496
CREATE A CENTER POINT.
P238.00°
 2101422263438465058627074828694
GMP & PCP.

Crown

#AngleFacetsNotes
C138.00°
1224364860728496
SET GIRDLE HEIGHT & LEVEL GIRDLE.
C233.50°
 1111323253537474959617173838595
GMP.
C329.00°
1224364860728496
MP@ C1.
C425.50°
 1111323253537474959617173838595
MP@ C3 - C3.
C522.00°
1224364860728496
MP@ C3
T0.00°
96
MP@ C4 & C5.