PC 04.215

INCA EMERALD

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L/W: 125%
Design RI: 1.58
H/W: 74%
Gear: 96
V/W³: 0.388
Symmetry: 2 (mirrored)
Facets: 41
Tiers: 16
Crown: 8
Pavilion: 33

This is a pretty traditonal antique looking emerald cut. I had a particular project for some stones like this cut in emeralds which were a little dark. However, these angles will work well for such a stone. Computed average brilliance for emerald. ISO= 71.3% COS= 56.7% DELTA=14.6% Dispersion= 13.1% Scintillation= 32.8%. You can also use this design for RI>1.58 with no angle changes.

Wireframe

Pavilion

#	Angle	Facets	Notes
G1	90.00°	2472	Level girdle to P5.
G2	90.00°	11375985	Level girdle to P4.
G3	90.00°	4896	Cut width.
P1	46.82°	4896	MP @ culet.
P2	40.45°	2472	MP@ culet
P3	38.30°	11375985	TCP.

Crown

#	Angle	Facets	Notes
C1	44.30°	4896	Cut girdle width so when polished it is .4mm wide
C2	39.30°	11375985	Level girdle to C1.
C3	37.49°	1474995	GMP.
C4	36.96°	2472	Level girdle to C2.
C5	32.38°	23257173	GMP.
C6	27.60°	4896	MP@ C1.
C7	27.30°	2472	MP@ C3.
C8	19.00°	2472	MP @ C2, C5 & C7.
C9	19.00°	4896	MP@ C2,C4 & C6.
T	0.00°	96	Cut & polish to ratio listed.