Lines and Curtains

by Arya Akhavan (May 2015)
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Gemology Projectopen
L/W
100%
Design RI
1.50
H/W
70%
Gear
96
V/W³
0.258
Symmetry
3 (mirrored)
Facets
103
Tiers
17
Crown
49
Pavilion
30

This design was a modification of my "Iron Son" design, and was an attempt to make it both easier and more geometric. The linear bars on the crown and the "curtain" adapter facets (reverse barion!) on the pavilion give this very unique design its name. The reflection pattern is absolutely fascinating! Works in materials from petalite to YAG (RI =1.50 - 1.83) with no changes, and can be scaled for higher RIs.

Wireframe

Lines and Curtains 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
96 4 8121620242832364044485256606468727680848892
Set stone size.
P658.56°
963264
Meet P2, P3, P4, P5; level girdle.
P557.20°
 42836606892
Meet P2, P3, P4; level girdle.
P453.44°
 82440567288
Meet P2, P3; level girdle.
P348.13°
122044527684
Level girdle.
P143.68°
164880
Cut to centerpoint.
P243.50°
151747497981
Meet at culet.

Crown

#AngleFacetsNotes
C449.88°
 42836606892
Level girdle.
C344.10°
96 824324056647288
Level girdle.
C240.98°
122044527684
Level girdle.
C540.28°
963264
Meet C3, C4
C140.00°
164880
Set girdle width.
C634.42°
 42836606892
Meet C3, C4, C5
C726.14°
 62638587090
Meet C2, C3, C6; C5, C6
C824.21°
 82440567288
Meet C2, C3, C6, C7
C921.28°
164880
Meet C1, C2, C8
T0.00°
24
Meet C7, C8