Faceting Design Diagram: Spur – Zircon – Hyacinth, Starlite


Zircon (Hyacinth, Starlite)

Spur (ZIRCON15.JRG)
By Jeff R. Graham
Copyright 1998
85% Light Return
Angles for R.I. = 1.98
85 facets + 12 facets on girdle = 97
6-fold, mirror-image symmetry
96 index
L/W = 1.065 T/W = 0.514 T/L = 0.483
P/W = 0.400 C/W = 0.193
H/W = (P+C)/W+0.02 = 0.613
P/H = 0.653 C/H = 0.315
Vol./W^3 = 0.244

Addition # 3 – This design cuts medium easy the crown meet can be a little hard. Cut in good medium color (I like honey) Zircon. It has nice sparkle to it because of the P5 & C4 tiers, 1-12cts.

Random – Cosine – ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler