Tut’s Pyramid: 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 "Tut's Pyramid".


Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

Tut's Pyramid (CHECK19.JRG) Zircon cut by Tony Carson
By Jeff R. Graham
Copyright 2001
81.8% Light Return
Angles for R.I. = 1.54
43 facets + 6 facets on girdle = 49
3-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.318 T/L = 0.276
P/W = 0.484 C/W = 0.217
H/W = (P+C)/W+0.02 = 0.720
P/H = 0.672 C/H = 0.301
Vol./W^3 = 0.287

Addition # 6 - Can be cut in refractive indexes 1.54 to 1.93 (89.1%)with no changes. Tourmaline is 84.7%, Zircon is 89.1%… Basically, the dark bars out near the corners just go away as the R.I. goes up. I left this in Quartz because it cuts a nice stone. 

Random - Cosine - ISO

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.

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!