Universal Oval: Faceting Design Diagram
Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Universal Oval".
Apatite (Yellow, Green, Neon, Blue)
Universal Oval (APAT2.JRG)
By Jeff R. Graham
Copyright 1998
86% Light Return
Angles for R.I. = 1.64
71 facets + 16 facets on girdle = 87
2-fold, mirror-image symmetry
96 index
L/W = 1.330 T/W = 0.748 T/L = 0.563
P/W = 0.435 C/W = 0.177
H/W = (P+C)/W+0.02 = 0.632
P /H = 0.688 C/H = 0.280
Vol./W^3 = 0.302
Addition # 3 - This also works in Peridot, Spinel, Garnet, & Sapphire. It cuts well and is pretty standard. It has nice light return for an oval and works in most material. Cut in light to medium material, 1-24cts.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
