BP 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 "BP Star".0
Peridot (Olivine, Green, apple green to yellow green)
BP Star (PDOT6.JRG)
By Jeff R. Graham
83.6% Light Return
Angles for R.I. = 1.67
56 facets + 10 facets on girdle = 66
5-fold, mirror-image symmetry
L/W = 1.051 T/W = 0.570 T/L = 0.542
P/W = 0.449 C/W = 0.190
H/W = (P+C)/W+0.02 = 0.659
P/H = 0.681 C/H = 0.289
Vol./W^3 = 0.248
Addition # 3 - The C3 facets can be cut before the C2's if you want to, otherwise this design cuts normally and you should not have any problems. It makes a very nice stone in any material, 1-8cts. Cut in refractive indexes 1.67 to 2.14 with no changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
Peridot Value, Price, and Jewelry Information
Peridot Buying Guide
Peridot Polishing Survey Results
Do Emeralds and Peridots Look Good Together?
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!