Trig Glitter: Faceting Design Diagram


Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Trig Glitter".

0

Peridot

Trig Glitter Jeff Graham Facet DesignTrig Glitter Jeff Graham Facet Design

Trig Glitter (MC110.JRG)

By Jeff R. Graham
Copyright 2006
79.3% Light Return
Angles for R.I. = 1.67
88 facets + 6 facets on girdle = 94
3-fold, mirror-image symmetry
96 index
L/W = 1.073 T/W = 0.383 T/L = 0.357 P/W = 0.515
C/W = 0.246 H/W = (P+C)/W+0.02 = 0.781 P/H = 0.660 C/H = 0.315 Vol./W^3 = 0.292

PAVILION

CROWN

Addition # 12 - Cut this in refractive index 1.67 to 2.14 with no changes. I designed this for Peridot or light colored Garnets. It is killer in any lightly saturated material and also works well in Zircons. Note: C2 only meets at the corners, cutting the tier to center point is the easiest way to make all the facets even.

Trig Glitter Jeff Graham Facet Design

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

More Articles
Peridot Value, Price, and Jewelry Informationwww.iRocks.com. Used with permission." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

Peridot Value, Price, and Jewelry Information

The modern August birthstone, peridot has been prized as a jewelry stone since ancient times. Always green in color but...
Read More
Peridot Buying GuideSterling silver ring</a> featuring a trillion-cut peridot in a solitaire setting with a twisted socket. 1.38 cts, 7.33 x 7.40 x 4.33 mm, Ethiopia. Jewelry designed by Sheelagh Zagoritis. Photo by <a href=https://www.gemsociety.org/article/trig-glitter-faceting-design-diagram/"https://www.theraregemstonecompany.com/">The Rare Gemstone Company</a>. Used with permission." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

Peridot Buying Guide

Our peridot buying guide can help you learn how these gems are graded, what to avoid, and how to identify...
Read More
Peridot Polishing Survey Results

Peridot Polishing Survey Results

Popular jewelry stones, peridots can actually vary in hardness. Our IGS member survey results can help you choose the right...
Read More
Do Emeralds and Peridots Look Good Together?Photo courtesy of <a href=https://www.gemsociety.org/article/trig-glitter-faceting-design-diagram/"https://www.liveauctioneers.com/">liveauctioneers.com and <a href=https://www.gemsociety.org/article/trig-glitter-faceting-design-diagram/"https://www.liveauctioneers.com/auctioneer/1056/pioneer-auction-gallery/">Pioneer Auction Gallery</a>." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

Do Emeralds and Peridots Look Good Together?

Although emeralds and peridots are both green gems, differences in shade might make it hard to pair them in jewelry....
Read More

Latest Articles

More Articles
Classic Engagement Ring StonesPastel purple sapphire</a>, 1.08 cts, 5.8 mm, round cut, Sri Lanka. © <a href=https://www.gemsociety.org/article/trig-glitter-faceting-design-diagram/"https://www.thegemtrader.com/">The Gem Trader</a>. Used with permission." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

Classic Engagement Ring Stones

Emerald, ruby, sapphire, and diamond are the most popular choices for classic engagement ring stones. Learn more about these traditional...
Read More
Broken Bangle — The Blunder-Besmirched History of Jade Nomenclature: Book Review

Broken Bangle — The Blunder-Besmirched History of Jade Nomenclature: Book Review

Is fei cui a better term for "pyroxene jade" than jadeite? Jeffery Bergman reviews Broken Bangle, a new book on...
Read More
Cuprite Value, Price, and Jewelry InformationJoel E. Arem</a>, PhD, FGA. Used with permission." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

Cuprite Value, Price, and Jewelry Information

One of the rarest of all facetable gems, cut cuprites can show magnificent deep red color. However, these beautiful stones...
Read More
Gemstone Radiation TreatmentPhoto courtesy of <a href=https://www.gemsociety.org/article/trig-glitter-faceting-design-diagram/"https://www.liveauctioneers.com/">liveauctioneers.com and <a href=https://www.gemsociety.org/article/trig-glitter-faceting-design-diagram/"https://www.liveauctioneers.com/auctioneer/1081/eros-auctions-inc/">Eros Auctions, Inc</a>." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

Gemstone Radiation Treatment

Gemstone radiation is a common but little understood technique for altering colors. Learn how it works and what gems usually...
Read More

Never Stop Learning

When you join the IGS community, you get trusted diamond & gemstone information when you need it.

Become a Member

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!