Tessellation 4 (F)

"Because fuck checkerboards, that's why."
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Gemology Projectopen
L/W
113%
Design RI
1.61
H/W
79%
Gear
96
V/W³
0.359
Symmetry
2 (mirrored)
Facets
85
Tiers
22
Crown
47
Pavilion
28

Suite: Tessellation Party! by Arya Akhavan (October 2012)

This pattern is a heavy expansion on the F-type theme for tessellation designs. Since continuing perfect squares and triangles would require fractional indices, I threw in some "normal" facets to balance that out. Written for golden topaz, but can be cut in materials from quartz to rutile (RI = 1.54 - 2.62) with no changes. Suggested length = 8-12 mm

Wireframe

Tessellation 4 (F) 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
 1474995
Set stone size.
G290.00°
16326480
Meet P1, P2, G1
G390.00°
2472
Level girdle.
P573.36°
2472
Meet P1, P4
P365.00°
 1474995
Meet P1, P2, G1, G2 (level girdle)
P450.00°
16326480
Level girdle.
P242.78°
 3 5434551539193
Meet at culet.
P141.00°
12182430366066727884
Cut to centerpoint.

Crown

#AngleFacetsNotes
C358.73°
2472
Level girdle.
C155.61°
 1474995
Set girdle width.
C452.12°
9648
Meet G1, C1
C245.72°
16326480
Level girdle.
C544.72°
17316579
Meet G2, G3, C2, C3
C640.04°
 3455193
Meet G1, G2, C1, C2
C838.20°
9648
Meet C1, C4, C6
C937.23°
 1474995
Meet C1, C4, C6, C8
C735.91°
11375985
Meet G1, G2, C1, C2, C6
C1014.05°
20286876
Meet C3, C5
C1112.57°
18306678
Meet C2, C5, C7, C10; C6, C7, C9
C1210.87°
 4445292
Meet C6, C7, C9, C11; C8, C9
C138.91°
96244872
Meet C8, C9, C12; C10, C11
T0.00°
24
Meet C11, C12, C13