Tessellation 38 (S)

Suite: Tessellation Party!
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Gemology Projectopen
L/W
100%
Design RI
1.54
H/W
70%
Gear
120
V/W³
0.233
Symmetry
4 (mirrored)
Facets
97
Tiers
16
Crown
49
Pavilion
32

by Arya Akhavan (November 2014)

More pentagons! Since you can't make a regular tiling of pentagons on a flat surface, there's no way to get the pentagonal designs in this suite to look super-geometric. This time around I stuck a square in the middle to see what happened with pentagons as I moved them away from the middle. Works in materials from quartz to rutile (RI = 1.54 - 2.62) with no changes, but I think topaz or large zircons would look best.

Wireframe

Tessellation 38 (S) 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
  3 27 33 57 63 87 93117
Set stone size.
G290.00°
 14 16 44 46 74 76104106
Level girdle.
P464.46°
 14 16 44 46 74 76104106
Meet P1, G1, P3
P142.30°
  3 27 33 57 63 87 93117
Cut to centerpoint.
P342.11°
  4 26 34 56 64 86 94116
Meet P1, P2
P241.80°
  2 28 32 58 62 88 92118
Meet P1, G1

Crown

#AngleFacetsNotes
C153.82°
  3 27 33 57 63 87 93117
Set girdle width.
C248.24°
 14 16 44 46 74 76104106
Level girdle.
C347.33°
 15 45 75105
Meet G2, C2
C445.96°
120 30 60 90
Meet G1, C1
C636.05°
120 30 60 90
Meet C1, C4, C5
C534.70°
  6 24 36 54 66 84 96114
Meet G1, G2, C1, C2
C729.56°
 15 45 75105
Meet C2, C3, C5
C921.23°
 15 45 75105
Meet C5, C7, C8
C820.00°
120 30 60 90
Meet C5, C6
T0.00°
 30
Meet C8, C9