Beryl (Aquamarine, Emerald, Helidore, Bixbite, Goshenite, Morganite, Golden Beryl)

Buff (B35.JRG)
By Jeff R. Graham
Copyright 2001
84.9% Light Return
Angles for R.I. = 1.56
73 facets + 12 facets on girdle = 85
2-fold, mirror-image symmetry
96 index
L/W = 1.330 T/W = 0.766 T/L = 0.576
P/W = 0.665 C/W = 0.189
H/W = (P+C)/W+0.02 = 0.874
P/H = 0.761 C/H = 0.216
Vol./W^3 = 0.524

Addition # 5 - This is pretty nice design, a preform is a good idea. This works in R.I. 1.54 to 1.93 (86.6%). It is deep and will help deepen light colors.

 

 

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