“Malt” Squared: Faceting Design Diagram
Information and guide for Faceting Design Diagrams. This facet design is called a " "Malt" Squared". This design is good for light to medium material.
Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
"Malt" Squared (QTZ46.JRG)
By Jeff R. Graham
Copyright 1995
72.6% Light Return
Angles for R.I. = 1.54
53 facets + 8 facets on girdle = 61
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.463 T/L = 0.463
P/W = 0.479 C/W = 0.232
H/W = (P+C)/W+0.02 = 0.731
P/H = 0.655 C/H = 0.318
Vol./W^3 = 0.306
Addition # 1 - The P3 facets can be cut later, but it's good to have them roughed in for the P4(G) facets. It helps to have the table in before cutting the C4, they meet. Cut this in refractive indexes 1.54 to 1.93 with no changes. This design is good for light to medium material, 1-8cts.
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.
Related Articles
Rose Quartz Value, Price, and Jewelry Information
Ametrine Value, Price, and Jewelry Information
Amethyst Gem, Price, and Jewelry Information
Citrine Value, Price, and Jewelry Information
Latest Articles
21 Pink Gemstones (How Many Do You Know?)
How Does Topaz Form?
Sphene (Titanite) Value, Price, and Jewelry Information
Citrine Buying Guide
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
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!