Radiant Barion Pear: Faceting Design Diagram
Helpful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Radiant Barion Pear"
Radiant Barion Pear (B37.JRG)
By Jeff R. Graham
84% Light Return
Angles for R.I. = 1.54
64 facets + 16 facets on girdle = 80
1-fold, mirror-image symmetry
L/W = 1.436 T/W = 0.878 T/L = 0.611
P/W = 0.608 C/W = 0.186
H/W = (P+C)/W+0.02 = 0.814
P/H = 0.747 C/H = 0.228
Vol./W^3 = 0.424
Addition # 5 - This works in R.I. 1.54 to 1.76 (86.6%) with no changes. This design is a lot of work to cut and not for a new cutter. Preform L/W=1.436 is needed to make this work. Other than a lot of work it is not especially hard. I designed this for light materials and large sized stones.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
Rose Quartz Value, Price, and Jewelry Information
Ametrine Value, Price, and Jewelry Information
Amethyst Value, Price, and Jewelry Information
Citrine Value, Price, and Jewelry Information
How Does Vapor Deposition Create Mystic Topaz and Aqua Aura Quartz?
Creating Ring Mountings for Deep-Cut Gemstones
How Does Topaz Form?
Prosopite Value, Price, and Jewelry Information
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!