Circus Star: 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 "Circus Star"
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Circus Star (DOME12.JRG)
By Jeff R. Graham
Copyright 2007
87.7% Light Return
Angles for R.I. = 1.62
73 facets + 8 facets on girdle = 81
8-fold symmetry
96 index
L/W = 1.000 T/W = 0.321 T/L = 0.321 P/W = 0.415
C/W = 0.350 H/W = (P+C)/W+0.02 = 0.785 P/H = 0.529 C/H = 0.446 Vol./W^3 = 0.310
PAVILION
CROWN
Addition # 13 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is designed for lightly saturated rough and works best in pastel colors. I designed this for nodule shaped material.
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
Tourmaline Gem, Price, and Jewelry Information
Siberite Tourmaline Material
What is Gemstone Pleochroism?
Faceting Survey Results – Polishing – Tourmaline
Latest Articles
Red Gemstones: Ruby, Spinel, Garnet and other great picks for jewelry
Jadeite Value, Price, and Jewelry Information
Tips for Cutting and Polishing Halite
Aquamarine Sources
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!