Near “P”: Faceting Design Diagram

Successful tips, details, and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Near P"

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HomeLearning CenterJewelry and LapidaryGemstone Faceting Diagrams and Technical Cutting InformationNear “P”: Faceting Design Diagram
By Jeff R. Graham

Beryl (Aquamarine, Emerald, Helidore, Bixbite, Goshenite, Morganite, Golden Beryl)

Near "P" (B4.JRG)
By Jeff R. Graham
Copyright 2001
79.3% Light Return
Angles for R.I. = 1.56
81 facets + 16 facets on girdle = 97
2-fold, mirror-image symmetry
96 index
L/W = 1.345 T/W = 0.873 T/L = 0.649
P/W = 0.604 C/W = 0.192
H/W = (P+C)/W+0.02 = 0.816
P/H = 0.741 C/H = 0.235
Vol./W^3 = 0.438

Addition # 5 - 85.9% in R.I. 1.62 with no changes, 89.9% in 1.93… This design is L/W=1.33 for all practical purposes and works very well in lighter colored large 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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