Melancholia

by Arya Akhavan and Jordan Wilkins (January 2013)

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L/W: 152%
Design RI: 1.72
H/W: 79%
Gear: 96
V/W³: 0.345
Symmetry: 2 (mirrored)
Facets: 61
Tiers: 17
Crown: 21
Pavilion: 28

This design started out as a bizarre, unusably-deep barion. Thanks to some inputs by Jordan Wilkins, this design has since become a usable, albeit a bit ordinary, rhomboid checkerboard with a coincidentally rhomboid shape. Works in materials from beryl to spinel (RI = 1.58 - 1.72), but I prefer it in purple-grey spinel. Suggested length = 8-15 mm

Wireframe

Pavilion

#	Angle	Facets	Notes
G1	90.00°	6425490	Set stone size.
G2	90.00°	9395787	Level girdle.
G3	90.00°	12366084	Level girdle.
P5	67.95°	6425490	Set stone size (meet P1, P2, P4)
P4	63.77°	5435391	Set stone size (cut to appropriate depth)
P6	62.87°	9395787	Meet P1, P2, P4, P5
P7	58.90°	12366084	Meet P2, P3, P6
P1	45.25°	5435391	Cut to centerpoint.
P2	45.02°	9395787	Meet at culet.
P3	42.00°	12366084	Meet at culet.

Crown

#	Angle	Facets	Notes
C1	61.82°	6425490	Level girdle.
C2	59.82°	9395787	Level girdle.
C3	58.63°	12366084	Level girdle.
C4	31.65°	9648	Meet G3, C1
C6	21.82°	2472	Meet G1, C3; C2, C3, C5
C5	20.00°	9395787	Meet C1, C2, C4
T	0.00°	24	Meet C4, C5; C5, C6