Brilliant Marquise 1.40: 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 "Brilliant Marquise"

0

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

Brilliant Marquise 1.40 (MC35.JRG) 6.47 carat Nigerian pink Tourmaline
By Jeff R. Graham
Copyright 1999
84.6% Light Return
Angles for R.I. = 1.54
59 facets + 16 facets on girdle = 75
2-fold, mirror-image symmetry
96 index
L/W = 1.401 T/W = 0.753 T/L = 0.537
P/W = 0.437 C/W = 0.141
H/W = (P+C)/W+0.02 = 0.598
P/H = 0.731 C/H = 0.235
Vol./W^3 = 0.243

Addition # 4 - This cuts like a round brilliant, for those of you who have cut my "Brilliant Pear" type designs, this will be very similar. Cut to center point on the Pavilion, then cut the girdle... Light return is very good, 1cts+. This works in Tourmaline, Topaz, and Peridot.


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!