Pedantic Sophistry

by Arya Akhavan (July 2013)

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L/W: 103%
Design RI: 1.62
H/W: 63%
Gear: 96
V/W³: 0.203
Symmetry: 3 (mirrored)
Facets: 67
Tiers: 13
Crown: 25
Pavilion: 42

After a long and fascinating conversation about the proper uses of "trillion" vs. "trilliant", I found out that "trilliant" is a trademarked term for a very specific triangular cut. So, just like the Old Mine, I wrote a better one. Works in materials from quartz to rutile (RI = 1.54 - 2.62) with no changes, but I prefer steel-blue tourmaline. Suggested size = 8-15 mm

Wireframe

Pavilion

#	Angle	Facets	Notes
G1	90.00°	151747497981	Set stone size.
G2	90.00°	82440567288	Level girdle.
P3	65.38°	151747497981	Level girdle.
P1	44.78°	102242547486	Cut to centerpoint.
P2	43.50°	82440567288	Meet at culet.
P4	43.50°	92341557387	Meet P1, P2, G1, G2, P3
P5	42.50°	112143537585	Meet P1, P3

Crown

#	Angle	Facets	Notes
C1	36.83°	151747497981	Set girdle width.
C2	36.83°	82440567288	Level girdle.
C3	32.00°	164880	Meet G1, C1
C4	27.41°	963264	Meet G2, C2; C1, C2, C3
C5	25.85°	151747497981	Meet C1, C2, C3, C4
T	0.00°	24	Meet C3, C5; C4, C5