Blue Star: Faceting Design Diagram

Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Blue Star".


Topaz (Swiss, Electric, London Blue, Imperial, White, Yellow, Pink, Champange)

Blue Star (TOPAZ3.JRG) 1.69 carats Guerro Topaz
By Jeff R. Graham
Copyright 1993
82.5% Light Return
Angles for R.I. = 1.62
67 facets + 6 facets on girdle = 73
6-fold, mirror-image symmetry
96 index L/W = 1.155 T/W = 0.562 T/L = 0.486
P/W = 0.459 C/W = 0.213
H/W = (P+C)/W+0.02 = 0.692
P/H = 0.663 C/H = 0.308
Vol./W^3 = 0.279

Gram Book 1 - Here is a good design for Topaz with sparkle that is easy to cut. It makes good earrings especially in blue material, 1/2-6cts. Cut in refractive index 1.62 to 2.14 (87.9%) 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!