Fat Trillion

by Arya Akhavan and William Parent (November 2015)
Save to collection
No ratings yet
Gemology Projectopen
L/W
106%
Design RI
1.54
H/W
68%
Gear
96
V/W³
0.253
Symmetry
3 (mirrored)
Facets
73
Tiers
9
Crown
13
Pavilion
60

This design was written as a Skype-based tutorial for William Parent, for him to use on a piece of synthetic flame-fusion ruby, with some mixed concave and flat faceting. The goal was to have an interesting pavilion with lots of facets, and a simple crown with a very large table. Works in materials from quartz to GGG (RI = 1.54 - 2.03) with no changes.

Wireframe

Fat Trillion 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
 71319253945515771778389
Set stone size.
P365.87°
 71319253945515771778389
Meet P2, G1
P144.45°
131945517783
Cut to centerpoint.
P244.14°
 3 824293540566167728893
Meet at culet.
P443.64°
141846507882
Meet P1, P3
P543.50°
 4 725283639576068718992
Meet P2, P3; culet

Crown

#AngleFacetsNotes
C142.66°
 72539577189
Set girdle width.
C228.00°
131945517783
Level girdle.
T0.00°
24
Meet C1, C2