Neuroglia

by Arya Akhavan (September 2012)
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Gemology Projectopen
L/W
115%
Design RI
1.63
H/W
78%
Gear
96
V/W³
0.332
Symmetry
6
Facets
55
Tiers
10
Crown
25
Pavilion
30

This was supposed to be a hexagonal "opposed bar". But, I just took my histology final, and when I rendered this in greyish amethyst, it looked like an astrocyte or oligodendrocyte. Hence, the name. Looks best in blue apatite (also works in greyish amethyst), but works from feldspar to CZ (RI = 1.52 - 2.16) with no changes. Suggested size = 6-15 mm

Wireframe

Neuroglia 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
 82440567288
Cut even girdle (not level girdle)
P475.00°
 82440567288
Meet G1, P3 (level girdle)
P350.58°
 23034626694
Float facet to approx. 1/3 inwards
P246.32°
 42836606892
Float facet to approx. 2/3 inwards
P143.03°
 62638587090
Cut to centrepoint.

Crown

#AngleFacetsNotes
C165.00°
 82440567288
Set girdle width.
C225.76°
141846507882
Meet G1, C1
C322.56°
122044527684
Float facet to approx. 1/3 inwards
C420.32°
102242547486
Float facet to approx. 2/3 inwards
T0.00°
24
Meet C3, C4