Faceting 121 - Lesson 1A

Beave
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Gemology Projectopen
L/W
100%
Design RI
1.54
H/W
67%
Gear
96
V/W³
0.234
Symmetry
8 (mirrored)
Facets
25
Tiers
5
Crown
9
Pavilion
16

by Arya Akhavan (November 2012)

Our first lesson in faceting theory deals with making patterns more complex and raising the material's RI, to see how the reflection patterns and light return change. We'll change both the complexity and the RI at the same time, to get a more exaggerated effect. Lesson rules: cut in dark amethyst, trying to match colors with lesson 1B and 1C

Wireframe

Faceting 121 - Lesson 1A 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
9612243648607284
Set stone size.
P142.00°
9612243648607284
Cut to centerpoint.

Crown

#AngleFacetsNotes
C244.72°
12366084
Level girdle.
C135.00°
96244872
Set girdle width.
T0.00°
24
Meet C1, C2