Porturillion

by Arya Akhavan (January 2013)
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Gemology Projectopen
L/W
103%
Design RI
1.54
H/W
82%
Gear
96
V/W³
0.296
Symmetry
1 (mirrored)
Facets
223
Tiers
27
Crown
79
Pavilion
120

Looking for an excessive Portuguese-style trillion wtih rounded corners? This design is a hybrid barion- Portuguese with a high crown and deep pavilion, designed for lighter larger materials. Should be excellent for larger quartz or topaz crystals, and has done well in medium-high saturation citrine. Works in materials from quartz to CZ (RI = 1.54 - 2.16), but is really intended for large pale things like topaz.

Wireframe

Porturillion 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
 32935616793
Set stone size.
G290.00°
112143537585
Meet P1, G1
G390.00°
131945517783
Meet P1, G2
G490.00°
151747497981
Meet P1, G3
P570.31°
151747497981
Level girdle.
P469.99°
131945517783
Level girdle.
P369.34°
112143537585
Level girdle.
P267.24°
 32935616793
Level girdle.
P148.02°
 2 610141822263034384246505458626670747882869094
Cut to centerpoint.
P646.02°
96 4 8121620242832364044485256606468727680848892
Meet P1, P5 (only 3 facets meet)
P744.52°
 2 610141822263034384246505458626670747882869094
Meet P1, P6
P843.00°
96 4 8121620242832364044485256606468727680848892
Meet P6, P7

Crown

#AngleFacetsNotes
C152.74°
 32935616793
Set girdle width.
C352.74°
131945517783
Level girdle.
C452.74°
151747497981
Level girdle.
C252.74°
112143537585
Level girdle.
C550.00°
164880
Meet G4, C4
C649.85°
122044527684
Meet G2, G3, C2, C3
C744.95°
963264
Meet G1, C1; C1, C2, C6
C843.72°
122044527684
Meet C1, C2, C6, C7; C3, C4, C5, C6
C942.90°
131945517783
Meet C3, C4, C5, C6, C8
C1132.25°
141846507882
Meet C5, C9; C8, C9, C10
C1031.38°
 62638587090
Meet C1, C2, C6, C7, C8
C1227.49°
 52737596991
Meet C7, C10; C8, C9, C10, C11
C1323.27°
 72539577189
Meet C8, C9, C10, C11, C12
C1415.76°
 42836606892
Meet C12, C13
T0.00°
24
Meet C11, C13