“R” Crossed : Faceting Design Diagram
Detailed information and guide for Faceting Design Diagrams. This facet design is called a " "R" Crossed ". This works well in man-made material.
"R" Crossed (SAP19.JRG)
By Jeff R. Graham
75% Light Return
Angles for R.I. = 1.76
61 facets + 12 facets on girdle = 73
2-fold, mirror-image symmetry
L/W = 1.500 T/W = 0.908 T/L = 0.606
P/W = 0.445 C/W = 0.200
H/W = (P+C)/W+0.02 = 0.665
P/H = 0.669 C/H = 0.301
Vol./W^3 = 0.406
Addition # 2 - Roughing in the table at about the time you cut the C5 tier makes this much easier to meet. This design is a hard one to cut because of the meets on the crown, but it makes a very nice stone, 1-18cts. This works well in man-made material.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
Sapphire Value, Price, and Jewelry Information
Ruby Value, Price, and Jewelry Information
Corundum Value, Price, and Jewelry Information
Padparadscha Sapphire Value, Price, and Jewelry Information
Eight Famous Sapphires and the Stories Behind Them
How to Dry Opals Safely
Rose Quartz Value, Price, and Jewelry Information
Ten Big, Beautiful, and Affordable Engagement Ring Stones
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
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!