Four Arrows: 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 "Four Arrows"

Home Learning Center Jewelry and Lapidary Gemstone Faceting Diagrams and Technical Cutting InformationFour Arrows: Faceting Design Diagram

By Jeff R. Graham

Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)

Four Arrows (MC81.JRG)
By Jeff R. Graham
Copyright 2002
91.8% Light Return
Angles for R.I. = 1.62
49 facets + 8 facets on girdle = 57
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.244 T/L = 0.244
P/W = 0.445 C/W = 0.203
H/W = (P+C)/W+0.02 = 0.668
P/H = 0.666 C/H = 0.304
Vol./W^3 = 0.260

Addition # 7 - This is nice in about any material, I often use it for cutting dark stones. Cut in refractive indexes 1.62 to 2.14 with no changes. This makes good earrings, easy to set and are low profile so they wear well.

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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