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
87.7% Light Return
Angles for R.I. = 1.62
73 facets + 8 facets on girdle = 81
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
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
Tourmaline Value, Price, and Jewelry Information
Mint Tourmalines: Gemstones for Our Times
Tourmaline Engagement Ring Stones: the Ultimate Guide
How Do Tourmalines Form?
Creating Ring Mountings for Deep-Cut Gemstones
How Does Topaz Form?
Prosopite Value, Price, and Jewelry Information
Gemstone Doublets, Triplets, and Other Assembled 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!