Square Star: Faceting Design Diagram

Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Square Star"

Home Learning Center Jewelry and Lapidary Gemstone Faceting Diagrams and Technical Cutting InformationSquare Star: Faceting Design Diagram

By Jeff R. Graham

Spinel (Red, Pink, Lavender, Green, Blue, Orange, Violet)

Square Star (SPINEL4.JRG)
By Jeff R. Graham
Copyright 1997
81.1% Light Return
Angles for R.I. = 1.71
89 facets + 16 facets on girdle = 105
8-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.557 T/L = 0.557
P/W = 0.413 C/W = 0.161
H/W = (P+C)/W+0.02 = 0.594
P/H = 0.695 C/H = 0.271
Vol./W^3 = 0.209

Addition # 3 - The C2,C3 steps are really the same and can be cut at one time, but I think it's easier to meet in two tiers. Easy to cut and works well in any nice color material 1-6cts. Cut in refractive indexes 1.71 to 2.14 (85.4%)with no changes.

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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