Split Phenomenon: 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 "Split Phenomenon"

Home Learning Center Jewelry and Lapidary Gemstone Faceting Diagrams and Technical Cutting InformationSplit Phenomenon: Faceting Design Diagram

By Jeff R. Graham

Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

Split Phenomenon (MIR17.JRG)
By Jeff R. Graham
Copyright 2004
91.8% Light Return
Angles for R.I. = 1.54
28 facets + 4 facets on girdle = 32
4-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.226
H/W = (P+C)/W+0.02 = 0.680
P/H = 0.639 C/H = 0.332
Vol./W^3 = 0.264

Addition # 9 - Cut this in refractive indexes 1.54 to 1.93 with no changes. A table can be cut if the stone is large. This is designed for light colors and works well in about any material.

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Jeff R. Graham

The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.

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Split Phenomenon: Faceting Design Diagram

Jeff R. Graham

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