Frost Shock

by Arya Akhavan (October 2012)
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Gemology Projectopen
L/W
115%
Design RI
1.62
H/W
70%
Gear
96
V/W³
0.263
Symmetry
6 (mirrored)
Facets
91
Tiers
10
Crown
55
Pavilion
36

This pattern is a variant on Lesson 7 from Faceting 101. I figured I might as well take the "Princess-y" crown to an extreme and see what happened, and it turned out surprisingly good! The C2-C5 facets are very easy to overcut, though. Can be cut in materials from quartz to rutile (RI = 1.54 - 2.62) with no changes. Suggested size = 7-10 mm

Wireframe

Frost Shock 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
961632486480
Set stone size.
P265.02°
961632486480
Meet P1, G1 (level girdle)
P143.03°
 41220283644526068768492
Cut to centerpoint.
P341.00°
 21418303446506266788294
Meet P1, P2

Crown

#AngleFacetsNotes
C138.47°
961632486480
Set girdle width.
C528.67°
 11517313347496365798195
Meet G1, C1, C2, C3, C4
C425.76°
 21418303446506266788294
Meet G1, C1, C2, C3
C323.00°
 41220283644526068768492
Meet G1, C1, C2
C221.90°
 61022263842545870748690
Meet G1, C1
T0.00°
24
Meet C2, C3