Simple Glitter: Faceting Design Diagram
Helpful details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Simple Glitter".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Simple Glitter (MC91.GEM)
By Jeff R. Graham
81.1% Light Return
Angles for R.I. = 1.62
113 facets + 16 facets on girdle = 129
8-fold, mirror-image symmetry
L/W = 1.000 T/W = 0.350 T/L = 0.350 P/W = 0.431
C/W = 0.206 H/W = (P+C)/W+0.02 = 0.657 P/H = 0.656 C/H = 0.314 Vol./W^3 = 0.213
Addition # 12 - This is pretty neat. The outside facets frame the center facets which are quite sparkly. The P1,C1 tiers can vary in width, just cut C2,P3 in or out. Note: On the crown changing C1 will affect the table. Cut in refractive indexes 1.62 to 2.14 (84.4) with no changes. Hint: I try to make the table a little larger than the P4 tier so it shows like a star through the table.
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?
Opal Stones and Gems: Value, Price, and Jewelry Information
Seven Stunning but Delicate Engagement Ring Stones
Advice For Grading Dark Colored Gemstones
Opal and Pearl Care 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!