Mindfuck

by Arya Akhavan (June 2013)
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Gemology Projectopen
L/W
100%
Design RI
1.58
H/W
62%
Gear
96
V/W³
0.216
Symmetry
3 (mirrored)
Facets
142
Tiers
23
Crown
64
Pavilion
54

Yes, this is a REVERSE barion, squashing a triangle into a circle instead of vice versa! This design can be cut either by doing the full girdle first, or by following the meetpoint-style instructions, cutting girdle facets as listed. Works in materials from orthoclase to rutile (RI = 1.52 - 2.62) with no changes, but I prefer golden beryl. Suggested size = 12-18 mm

Wireframe

Mindfuck 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
121620444852768084
Meet P1, P2, G1
G390.00°
 82440567288
Meet G2, P3, P4
G490.00°
 42836606892
Meet G3, P6, P7
G590.00°
963264
Meet G4, P7, P10
P1069.24°
963264
Meet P7, P8, P9
P768.81°
 42836606892
Meet P4, P5, P6
P665.30°
 82440567288
Meet G2, P3, P4, G3 (level girdle)
P443.91°
112143537585
Meet P1, P3
P343.90°
122044527684
Meet P1, P2, G1, G2 (level girdle)
P543.42°
102242547486
Meet P1, P3, P4
P243.39°
164880
Meet culet.
P843.39°
 92341557387
Meet P4, P6, P7
P143.15°
141846507882
Cut to centerpoint.
P942.74°
 82440567288
Meet P5, P8

Crown

#AngleFacetsNotes
C133.92°
96 4 8121620242832364044485256606468727680848892
Set girdle width.
C331.48°
 92341557387
Meet G2, G3, C1
C231.45°
151747497981
Meet G1, G2, C1
C429.43°
 23034626694
Meet G4, G5, C1
C525.41°
963264
Meet C1, C4
C624.11°
 32935616793
Meet C1, C3, C4
C823.07°
 13133636595
Meet C4, C5, C6
C722.79°
102242547486
Meet C1, C2, C3
T0.00°
24
Meet C6, C7, C8