Lucent Beam

Suite: Elemental Spirits
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Gemology Projectopen
L/W
133%
Design RI
1.54
H/W
72%
Gear
96
V/W³
0.364
Symmetry
1 (mirrored)
Facets
87
Tiers
12
Crown
53
Pavilion
34

by Arya Akhavan (December 2015)

This design is a significant simplification of my "Lumina's Rays" design, and should be overwhelmingly simpler to cut. When establishing G2, it helps to think of the outline as a 24-facet round with the bottom chopped off. The reflection pattern on this one is substantially different from the original, but the crown is still super-cool. Works in materials from quartz to zircon (RI = 1.54 - 1.93) with no changes - try it in yellow lab sapphire!

Wireframe

Lucent Beam 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
 2 61014182226306670747882869094
Set stone size (include index 14, 82 as preform).
G290.00°
48
Meet P1, G1 (remove preform facets)
P144.00°
 2 61014182226306670747882869094
Cut to centerpoint (include index 14, 82 for preform).
P244.00°
48
Level girdle (remove preform facets)

Crown

#AngleFacetsNotes
C162.61°
48
Set girdle width.
C236.10°
 2 61014182226306670747882869094
Level girdle.
C334.15°
96 816243264728088
Meet G1, G2, C1, C2; G1, C2
C433.90°
 412202868768492
Meet G1, C2
C728.00°
48
Meet C1, C3, C6
C522.88°
 412202868768492
Meet C2, C3, C4
C622.17°
96 816243264728088
Meet C2, C3, C4, C5
T0.00°
24
Meet C5, C6; C5, C6, C7