Buff: 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 "Buff".0
By Jeff R. Graham
84.9% Light Return
Angles for R.I. = 1.56
73 facets + 12 facets on girdle = 85
2-fold, mirror-image symmetry
L/W = 1.330 T/W = 0.766 T/L = 0.576
P/W = 0.665 C/W = 0.189
H/W = (P+C)/W+0.02 = 0.874
P/H = 0.761 C/H = 0.216
Vol./W^3 = 0.524
Addition # 5 - This is pretty nice design, a preform is a good idea. This works in R.I. 1.54 to 1.93 (86.6%). It is deep and will help deepen light colors.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
Aquamarine Value, Price, and Jewelry Information
Emerald Value, Price, and Jewelry Information
Seven Famous Emeralds and Their Stories
Emerald Origins: History and Identification
Crystalline Quartz Buying Guide
How Does Vapor Deposition Create Mystic Topaz and Aqua Aura Quartz?
Spurrite Value, Price, and Jewelry Information
Lapidary Technology Through the Ages: Laps and Polish
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!