To Zanzibar by Motor Car

by Arya Akhavan (October 2012)
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Gemology Projectopen
L/W
102%
Design RI
1.83
H/W
61%
Gear
80
V/W³
0.199
Symmetry
5 (mirrored)
Facets
71
Tiers
12
Crown
31
Pavilion
40

After a long time of being seriously confused by facial nerves, someone finally mentioend this mnemonic to me. I was so pissed off at the time that I had wasted, that I decided to take a break and write a new design. I prefer it in yellow YAG, but works in materials from petalite to rutile (RI = 1.50 - 2.62) with no changes. Suggested size = 6-10 mm

Wireframe

To Zanzibar by Motor Car 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
 824405672
Set stone size.
G290.00°
 6102226384254587074
Level girdle.
P143.72°
 824405672
Cut to centerpoint.
P243.00°
 6102226384254587074
Meet at culet.
P342.80°
 925415773
Meet P1, P2, G1, G2
P441.00°
 521375369
Meet P1, P2, G1, G2

Crown

#AngleFacetsNotes
C348.56°
1026425874
Level girdle.
C145.00°
 824405672
Set girdle width.
C235.00°
 622385470
Level girdle.
C430.00°
 622385470
Meet C1, C2, C3
C520.00°
 3 91925354151576773
Meet C1, C2, C3, C4
T0.00°
20
Meet C4, C5