Sun Drop: Faceting Design Diagram
Successful tips, details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Sun Drop"
Sunstone (Feldspar, Bytonite, Labradorite, Spectrolite, Orthoclase)
Sun Drop (SUN35.JRG)
By Jeff R. Graham
Copyright 2006
79.8% Light Return
Angles for R.I. = 1.54
22 facets + 8 facets on girdle = 30
1-fold, mirror-image symmetry
96 index
L/W = 1.936 T/W = 1.520 T/L = 0.785 P/W = 0.458
C/W = 0.177 H/W = (P+C)/W+0.02 = 0.654 P/H = 0.700 C/H = 0.270 Vol./W^3 = 0.466
PAVILION
CROWN
Cut this in refractive indexes 1.54 to 2.14 with no changes. This is designed for shiler or color. Note: A preform of the correct L/W is the best way to cut this. The P4(G), P5(G) are equal size. L/W is not critical, but this design not for a beginner.
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.
Related Articles
Bytownite Value, Price, and Jewelry Information
Orthoclase Value, Price, and Jewelry Information
Feldspar Value, Price, and Jewelry Information
Labradorite Value, Price, and Jewelry Information
Latest Articles
Classic Engagement Ring Stones
Broken Bangle — The Blunder-Besmirched History of Jade Nomenclature: Book Review
Cuprite Value, Price, and Jewelry Information
Gemstone Radiation Treatment
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get Gemology Insights
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!