Flight of Ideas

by Arya Akhavan (July 2014)

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L/W: 320%
Design RI: 1.58
H/W: 86%
Gear: 96
V/W³: 1.523
Symmetry: 2 (mirrored)
Facets: 73
Tiers: 24
Crown: 37
Pavilion: 32

This design was written for a friend of mine, who had a long piece of yellow tourmaline. He wanted a design that would be more interesting than the standard emerald step cut, so I came up with this. Yes, there's a narrow bowtie, but if you rock the stone it looks like it flies left and right, hence the name. Works in materials from beryl to zircon (RI = 1.58 - 1.93) with no changes.

Wireframe

Pavilion

#	Angle	Facets	Notes
G1	90.00°	9648	Set stone width.
G3	90.00°	2472	Level girdle.
G2	90.00°	12366084	Level girdle.
P7	70.00°	9648	Meet P3, P4, P5 (re-adjust girdle to be level, and meet P5, P6, P7)
P9	68.31°	2472	Meet P6, P8
P3	65.00°	9648	Cut until P2-P3 line is approx. 1/3 the distance from girdle to the culet.
P8	49.39°	12366084	Meet G1, P5, P6, P7
P4	43.00°	2465094	Meet P1, P2, P3
P5	42.62°	3455193	Meet P1, P4
P2	41.43°	9648	Meet at culet.
P6	40.72°	4445292	Meet P1, P4, P5
P1	40.50°	1474995	Cut to centerpoint.

Crown

#	Angle	Facets	Notes
C1	54.00°	9648	Set girdle width.
C3	54.00°	2472	Level girdle.
C2	38.96°	12366084	Level girdle.
C4	28.30°	3455193	Meet G1, G2, C1, C2
C5	25.01°	6425490	Meet G1, G2, C1, C2, C4
C10	19.79°	1474995	Meet C1, C4, C9
C7	18.28°	7415589	Meet C2, C3, C5, C6
C9	18.27°	2465094	Meet C4, C5, C7, C8
C11	17.08°	9648	Meet C1, C10
C6	16.91°	2472	Meet C2, C3, C5
C8	16.75°	3455193	Meet C4, C5, C7
T	0.00°	24	Meet C6, C7, C8; C9, C10, C11