3+ Pavilion: Faceting Design Diagram

Zircon (Hyacinth, Starlite)

3+ Pavilion (ZIRCON1.JRG)
By Jeff R. Graham
Copyright 1993
88% Light Return
Angles for R.I. = 1.93
61 facets + 8 facets on girdle = 69
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.322 T/L = 0.322
P/W = 0.420 C/W = 0.224
H/W = (P+C)/W+0.02 = 0.664
P/H = 0.632 C/H = 0.338
Vol./W^3 = 0.232

Addition # 2 - This design is good in light to med material, 1-4cts. I like it in yellow or blue, it is nice for earrings (1ct+), if you like them on the bigger side. Cut in refractive indexes 1.73 to 2.14 (83.4%) with no changes.

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler