Aperture Science

by Arya Akhavan (November 2012)

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L/W: 141%
Design RI: 2.02
H/W: 84%
Gear: 96
V/W³: 0.461
Symmetry: 2 (mirrored)
Facets: 59
Tiers: 11
Crown: 21
Pavilion: 38

For some reason, I associate this kind of outline with a camera, so I tried to get the finished reflection pattern to look like a camera and aperture. It worked pretty well, but for an even better camera "feel", don't cut P3. Works in materials from feldspar to rutile (RI = 1.52 - 2.62) with no changes, but I like it in GGG. Suggested length = 8-12 mm

Wireframe

Pavilion

#	Angle	Facets	Notes
G1	90.00°	1521273363697581	Set stone length.
G2	90.00°	9648	Meet P1, G1 (set stone width)
P2	65.00°	9648	Level girdle.
P1	42.00°	3 91521273339455157636975818793	Cut to centerpoint.
P3	41.00°	12182430366066727884	Meet P1, G1, G2, P2 (optional)

Crown

#	Angle	Facets	Notes
C1	40.00°	9648	Set girdle width.
C2	35.00°	1521273363697581	Level girdle.
C3	33.76°	22267074	Meet G1, C2
C4	30.00°	1474995	Meet G1, G2, C1, C2
C5	27.59°	9648	Meet C1, C4; C2, C3, C4
T	0.00°	24	Meet C2, C3, C4, C5