Star of Darkness

by Arya Akhavan (September 2013)
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Gemology Projectopen
L/W
100%
Design RI
1.58
H/W
92%
Gear
96
V/W³
0.437
Symmetry
4 (mirrored)
Facets
49
Tiers
9
Crown
25
Pavilion
24

This design was written specifically for pale materials in very deep pieces of rough. The extra pavilion depth should deepen the color, while the P3 facets create an interesting "North Star" effect in the reflection pattern. Works in materials from quartz to rutile (RI = 1.54 - 2.62) with no changes, but I prefer it in peach morganite. Suggested size = 8-15 mm

Wireframe

Star of Darkness 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
96244872
Set stone size.
P271.37°
96244872
Level girdle.
P145.00°
1113353759618385
Cut to centerpoint.
P342.89°
1014343858628286
Meet P1, P2

Crown

#AngleFacetsNotes
C150.00°
96244872
Set girdle width.
C230.00°
 321274551697593
Meet G1, C1
C425.00°
 222264650707494
Meet C1, C2
C320.00°
12366084
Meet G1, C1, C2
T0.00°
24
Meet C3, C4