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
81% Light Return
Angles for R.I. = 1.62
121 facets + 8 facets on girdle = 129
16-fold, mirror-image symmetry
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
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
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!