Topaz Crystal III : 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 "Topaz Crystall III"

Home Learning Center Jewelry and Lapidary Gemstone Faceting Diagrams and Technical Cutting InformationTopaz Crystal III : Faceting Design Diagram

By Jeff R. Graham

Topaz (Swiss, Electric, London Blue, Imperial, White, Yellow, Pink, Champange)

Topaz Crystal III (TOPAZ6.JRG)
By Jeff R. Graham
Copyright 1993
70% Light Return
Angles for R.I. = 1.62
87 facets + 16 facets on girdle = 103
2-fold, mirror-image symmetry
96 index
L/W = 1.428 T/W = 0.876 T/L = 0.613
P/W = 0.477 C/W = 0.213
H/W = (P+C)/W+0.02 = 0.710
P/H = 0.672 C/H = 0.300
Vol./W^3 = 0.369

Addition # 2 - This design makes a good large oval in any material, but it is not easy to cut. But if you like ovals, it has nice flash and light return. The cutting will keep you out of trouble for quite a while, 4-18cts.

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.

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Round, silver-white topaz</a>, 18.76 cts, 16.9 x 16.9 x 11.4 mm, Spitzkopje, Namibia. © <a href=https://www.gemsociety.org/article/topaz-crystal-iii-faceting-design-diagram/"https://www.arkraregems.com/">ARK Rare Gems</a>. Used with permission." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="responsive" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;object-fit:cover;object-position:50% 50%"/>

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