Crystal Trig Glitter: Faceting Design Diagram
Successful tips and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called Crystal Trig Glitter
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Crystal Trig Glitter (MC111.JRG)
By Jeff R. Graham
84% Light Return
Angles for R.I. = 1.62
76 facets + 6 facets on girdle = 82
3-fold, mirror-image symmetry
L/W = 1.073 T/W = 0.364 T/L = 0.339 P/W = 0.478
C/W = 0.246 H/W = (P+C)/W+0.02 = 0.744 P/H = 0.643 C/H = 0.330 Vol./W^3 = 0.277
Addition # 12 - Cut in refractive indexes 1.62 to 2.14 with no changes. I designed this Trig variation for Aquamarine or any light to medium saturated material. This works in Quartz (41 degrees) although the performance is a little lower (74.8%). Note: C2 tier only meets the girdle at the corners, cutting the tier center point is the easiest way to have even 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?
Void Reaver Gem Design for a Lab-Created Alexandrite
D20 Gemstone: a Dungeons and Dragons-Inspired Design
Variscite Value, Price, and Jewelry Information
Interview with Justin Prim and Victoria Raynaud: The Dynamic Duo That Built a Multifaceted Business in the World of Gems
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!