Brilliant Pear Checker: Faceting Design Diagram
An informational guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called Brilliant Pear Checker.
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Brilliant Pear Checker (CHECK28.JRG)
By Jeff R. Graham
Copyright 2001
80.6% Light Return
Angles for R.I. = 1.62
58 facets + 13 facets on girdle = 71
1-fold, mirror-image symmetry
96 index
L/W = 1.207 T/W = 0.281 T/L = 0.233
P/W = 0.451 C/W = 0.217
H/W = (P+C)/W+0.02 = 0.688
P/H = 0.655 C/H = 0.316
Vol./W^3 = 0.245
Addition # 6 - This is not hard, especially if you have cut my "Brilliant Pear" design(s) first. However, it can be a little tricky to cut the crown in. This works in refractive indexes 1.62 to 1.93 with no changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
