Double Rose: Faceting Design Diagram
Detailed information and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Double Rose".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Double Rose (DOME27.JRG)
By Jeff R. Graham
Copyright 2007
81% Light Return
Angles for R.I. = 1.62
121 facets + 8 facets on girdle = 129
16-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.319 T/L = 0.319 P/W = 0.438 C/W = 0.391
H/W = (P+C)/W+0.02 = 0.849 P/H = 0.516 C/H = 0.460
Vol./W^3 = 0.330
PAVILION
CROWN
Addition # 13 -Cut this in refractive indexes 1.62 to 2.14 with no changes. This is designed for light saturated color and a large stone is best. This is not hard to cut, other than is has a lot of facets.
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
A View of the Quartzsite Gem Shows
What is Gemstone Pleochroism?
Chrome Tourmaline Buying Guide
Latest Articles
Quartz Toxicity: Understanding the Risks for Jewelers and Wearers
Synthetic Amethyst: What is it and How is it Made?
Hambergite Value, Price, and Jewelry Information
Pearl Simulants: How to Spot Faux Pearls
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!