Singular 7: Faceting Design Diagram
Helpful tips, details and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Singular 7"0
Singular 7 (MIR33.JRG)
By Jeff R. Graham
94.4% Light Return
Angles for R.I. = 1.54
57 facets + 7 facets on girdle = 64
L/W = 1.026 T/W = 0.299 T/L = 0.291
P/W = 0.431 C/W = 0.188
H/W = (P+C)/W+0.02 = 0.639
P/H = 0.675 C/H = 0.294
Vol./W^3 = 0.195
Addition # 9 - This is quite interesting and not difficult to cut. It works well in any material. I like it in Garnets. Cut in refractive indexes 1.54 to 2.14 with no changes. This is a bright design and has a ton of sparkle.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
Rose Quartz Value, Price, and Jewelry Information
Ametrine Value, Price, and Jewelry Information
Amethyst Value, Price, and Jewelry Information
Citrine Value, Price, and Jewelry Information
Why are Topaz and Citrine Gemstones Misidentified?
Identifying Garnets Simplified
Staurolite Value, Price, and Jewelry Information
Amethyst Buying Guide
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
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!