Home Rough Equipment Books Online Designs Just Ask Jeff Order News List Contact Me Links
Amethyst Aquamarine Beryl Citrine Emerald Garnet Opal Peridot Sapphire Scapolite Spinel Sunstone Synthetics Topaz Tourmaline Quartz Zircon

Bargains Beginner's Page Eclectic New Stuff Odds & Ends Parcels Specials
Cut Gemstones Cutting Information Pricing Guides Buying Gemstones

Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

Cap (B20.JRG)
By Jeff R. Graham
Copyright 2001
87.9% Light Return
Angles for R.I. = 1.54
67 facets + 16 facets on girdle = 83
2-fold, mirror-image symmetry
96 index
L/W = 1.342 T/W = 0.827 T/L = 0.616
P/W = 0.583 C/W = 0.202
H/W = (P+C)/W+0.02 = 0.806
P/H = 0.724 C/H = 0.251
Vol./W^3 = 0.439

Addition # 5 - Cut in R.I 1.54 to 1.76 (89.1%). This is harder to cut than it looks, be sure your L/W is correct. The table meets can be tough. This is designed for large Quartz, but works well in light man-made materials.

 

 


Random - Cosine - ISO

Return to OnLine Design Index

Home Rough Equipment Books Online Designs Just Ask Jeff Order News List Contact Me Links


Copyright 1998-2009 Gram Faceting - All Rights Reserved.