Phil's Lapiderpy

Arya Akhavan and Phil Lagas-Rivera
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Gemology Projectopen
L/W
143%
Design RI
1.54
H/W
66%
Gear
96
V/W³
0.365
Symmetry
2 (mirrored)
Facets
61
Tiers
18
Crown
25
Pavilion
36

November 2014

Phil Lagas-Rivera, a good friend and frequent test-cutter of mine, tried to cut one of my Tessellation designs and instead completely screwed up somewhere. As far as he could tell, this is what it ended up as. Works well in quartz (RI = 1.54), but as you increase the RI you get weird scattered windowing effects at the ends, similar to the tip of a pear or marquise. Try it and see what happens!

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Pavilion

#AngleFacetsNotes
G190.00°
 1474995
Set stone width.
G290.00°
 8405688
Meet P1, P2, G1
G390.00°
12366084
Level girdle.
G490.00°
2472
Level girdle.
P342.40°
 8405688
Level girdle.
P542.40°
12366084
Meet G2, P3, P4
P642.20°
2472
Meet P4, P5
P141.80°
 1474995
Cut to centerpoint.
P441.50°
10385886
Meet P2, P3
P241.00°
 2465094
Meet at culet.

Crown

#AngleFacetsNotes
C247.40°
 8405688
Level girdle.
C342.09°
12366084
Level girdle.
C641.58°
10385886
Meet G2, G3, C2, C3; C1, C2, C5
C138.58°
 1474995
Set girdle width.
C534.90°
9648
Meet G1, C1
C430.36°
2472
Level girdle.
C722.10°
 3455193
Meet C1, C2, C5, C6; C3, C4, C6
T0.00°
24
Meet C5, C7; C3, C4, C6, C7