PC 08.167B

Checkerboard AC 1.15

by Alexandre Wolkonsky
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DataVueopen
L/W
115%
Design RI
1.62
H/W
79%
Gear
96
V/W³
0.380
Symmetry
2 (mirrored)
Facets
80
Tiers
20
Crown
16
Pavilion
64

from GemCad by Jim Finlayson ONMI Sequence by Robert H. Long

* Angles modified from Finlayson's original GemCad. Because of the apex crown, you can cut this in lower R.I. without windowing. See other L/W variants.

Wireframe

Checkerboard AC 1.15 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
 1474995
Set Size
G290.00°
 3455193
Meet 1-2-G1
G390.00°
21276975
Meet 2-3-G2
G490.00°
23257173
Meet 3-4-G3
P159.18°
 1474995
Level Girdle and meet 1-2-5 *
P258.77°
23257173
Level Girdle and meet 3-4-6 *
P358.00°
 3455193
Meet at Corner
P458.00°
21276975
"
P541.00°
 3455193
Cut to PCP
P640.13°
 9395787
"
P739.09°
15336381
" *
P838.77°
21276975
"

Crown

#AngleFacetsNotes
C160.42°
 3455193
Level Girdle
C260.42°
21276975
"
C360.00°
 1474995
Set Girdle thickness
C460.00°
23257173
"
C525.93°
12366084
Meet at Corner
C620.00°
 5435391
Meet a-b-e
C720.00°
19296777
Meet c-d-e
C89.35°
12366084
Meet e-f-g