Jumper

by Arya Akhavan (December 2012)

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L/W: 100%
Design RI: 1.54
H/W: 82%
Gear: 96
V/W³: 0.336
Symmetry: 4 (mirrored)
Facets: 45
Tiers: 10
Crown: 21
Pavilion: 24

This is a minor tweak of a previous design, inspired by Marco Voltolini's "Ventilatore", but in a square outline. It turned out to have a very interesting reflection pattern with lots of contrast. Works in materials from feldspar to zircon with no changes (RI = 1.52 - 1.93). For RIs up to 2.16, scale P1 to 40.00*.

Wireframe

Pavilion

#	Angle	Facets	Notes
G1	90.00°	96244872	Set stone size.
G2	90.00°	12366084	Meet P1, G1
P2	63.83°	96244872	Level girdle.
P1	42.00°	81216323640566064808488	Cut to centerpoint.

Crown

#	Angle	Facets	Notes
C1	42.00°	96244872	Set girdle width.
C3	33.00°	23477195	Meet G1, G2, C1, C2
C4	30.00°	22467094	Meet G1, G2, C1, C2, C3
C5	28.50°	21456993	Meet G1, G2, C1, C2, C3, C4
C2	27.73°	12366084	Level girdle.
T	0.00°	24	Meet C2, C4, C5