Scot Plaid: 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 "Scot Plaid".

0

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

Scot Plaid (QTZ37.JRG)
By Jeff R. Graham
Copyright 1994
69.2% Light Return
Angles for R.I. = 1.54
97 facets + 6 facets on girdle = 103
6-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.511 T/L = 0.442
P/W = 0.469 C/W = 0.202
H/W = (P+C)/W+0.02 = 0.691
P/H = 0.678 C/H = 0.293
Vol./W^3 = 0.271

Addition # 1 - This design is tough to cut because of the step cuts, and the small C6 facets (have to be exact) on the crown. This design is good for very light colored materials, notice it is not bright, but it has a lot of sparkle. Cut in refractive indexes 1.54 to 2.20 with no changes.


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!