Winter Ice: Faceting Design Diagram
Helpful tips, details and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Winter Ice"0
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Winter Ice (DOME37.JRG)
By Jeff R. Graham
84.7% Light Return
Angles for R.I. = 1.62
85 facets + 6 facets on girdle = 91
6-fold, mirror-image symmetry
L/W = 1.155 T/W = 0.217 T/L = 0.188 P/W = 0.419 C/W = 0.404
H/W = (P+C)/W+0.02 = 0.843 P/H = 0.497 C/H = 0.479
Vol./W^3 = 0.342
Addition # 13 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is ideal for lightly saturated material and works well in about any material. This is not hard to cut and is very pretty.
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?
Why are Topaz and Citrine Gemstones Misidentified?
Identifying Garnets Simplified
Staurolite Value, Price, and Jewelry Information
Amethyst Buying Guide
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!