Tumbling Star

by Arya Akhavan (May 2013)
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Gemology Projectopen
L/W
105%
Design RI
1.65
H/W
66%
Gear
80
V/W³
0.201
Symmetry
5
Facets
41
Tiers
9
Crown
21
Pavilion
20

This design was the prototype for my submission to the 2013 Gemology Online facet design competition, and I actually prefer it over my submission. This is more interesting, even if it has more facets and slightly lower brightness. Works in materials from orthoclase to CZ (RI = 1.52 - 2.16), but I prefer it in hiddenite. Suggested size = 6-10 mm

Wireframe

Tumbling Star 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
 824405672
Set stone size.
P149.10°
 824405672
Cut to centerpoint.
P245.10°
 925415773
Meet P1, G1
P343.10°
1026425874
Meet P1, G1, P2

Crown

#AngleFacetsNotes
C140.00°
 824405672
Set girdle width.
C230.00°
 622385470
Meet G1, C1
C325.00°
8016324864
Meet G1, C1, C2
C420.00°
1026425874
Meet C1, C2, C3
T0.00°
20
Meet C3, C4