Painwheel

by Arya Akhavan (December 2013)
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Gemology Projectopen
L/W
102%
Design RI
1.54
H/W
63%
Gear
96
V/W³
0.191
Symmetry
3
Facets
49
Tiers
17
Crown
22
Pavilion
18

This trillion is strange. There's no two ways about it. But it has one hell of a cool reflection pattern, with some great contrast and very interesting virtual facets. It does look vaguely angry and painful (to sight and to cut). Works in materials from quartz to zircon (RI = 1.54 - 1.93) with no changes, but I prefer pink tourmaline. Suggested size = 7-12 mm

Wireframe

Painwheel 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
134577
Set stone size.
G290.00°
195183
Level girdle.
G390.00°
286092
Level girdle.
P144.84°
134577
Cut to centerpoint.
P243.66°
195183
Meet at culet.
P443.16°
124476
Meet P1, P3, G1, G3
P343.09°
286092
Meet at culet.
P542.88°
205284
Meet P2, P3, G2, G3; culet
P641.66°
296193
Meet P1, P3, G1, G3, P4; culet

Crown

#AngleFacetsNotes
C248.83°
134577
Level girdle.
C143.42°
195183
Set girdle width.
C429.87°
215385
Meet G2, G3, C1, C3
C329.80°
286092
Level girdle.
C629.65°
164880
Meet C1, C2, C4; C2, C3, C5
C526.64°
275991
Meet G2, G3, C1, C3, C4
C714.19°
963264
Meet C2, C3, C5, C6; C4, C5, C6
T0.00°
24
Meet C4, C5, C6, C7