Green Cross-Point: Faceting Design Diagram
Successful tips and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Green Cross-Point".
Peridot (Olivine, Green, apple green to yellow green)
Green Cross-Point (PDOT3.JRG)
By Jeff R. Graham
Copyright 1994
77.5% Light Return
Angles for R.I. = 1.67
37 facets + 4 facets on girdle = 41
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.541 T/L = 0.541
P/W = 0.438 C/W = 0.207
H/W = (P+C)/W+0.02 = 0.665
P/H = 0.659 C/H = 0.311
Vol./W^3 = 0.297
Addition # 3 - A simple square cut with a lot of flash, this design cuts fast and is easy. A nice stone for about anything you want to do with it. Light to medium material, 1/2-4cts. Cut in refractive indexes 1.67 to 1.76 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.
Related Articles
Peridot Value, Price, and Jewelry Information
A World of Crystals
What Were the Gemstones of the Breastplate of Aaron?
Peridot 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!