Faceting Design Diagram: Beanie – Zircon – Hyacinth, Starlite


Zircon (Hyacinth, Starlite)

Beanie (ZIRCON14.JRG)
By Jeff R. Graham
Copyright 1998
78% Light Return
Angles for R.I. = 1.98
67 facets + 12 facets on girdle = 79
2-fold, mirror-image symmetry
96 index
L/W = 1.500 T/W = 0.751 T/L = 0.501
P/W = 0.592 C/W = 0.282
H/W = (P+C)/W+0.02 = 0.895
P/H = 0.662 C/H = 0.315
Vol./W^3 = 0.468

Addition # 2 – This is a little hard to cut. The crown can be hard to get to meet, roughing in the table helps. This makes a nice cut in any light to medium material, 1-16cts. Cut in refractive indexes 1.76 to 1.98 with no changes.


Random – Cosine – ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Gram Faceting Archive of Information
This edited version of an article by the late Jeff Graham is part of a special archived informational series from Gram Faceting. Used with permission.