Mars Dome: Faceting Design Diagram

Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Mars Dome".

Home Learning Center Jewelry and Lapidary Gemstone Faceting Diagrams and Technical Cutting InformationMars Dome: Faceting Design Diagram

By Jeff R. Graham

Danburite (Clear, Yellow, Pink)

Mars Dome (CHECK8.JRG)
By Jeff R. Graham
Copyright 2001
85.7% Light Return
Angles for R.I. = 1.63
53 facets + 8 facets on girdle = 61
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.161 T/L = 0.161
P/W = 0.405 C/W = 0.279
H/W = (P+C)/W+0.02 = 0.704
P/H = 0.576 C/H = 0.396
Vol./W^3 = 0.244

Addition # 6 - Cut in refractive indexes 1.62 to 1.93 (86.4%) with no changes. I designed this for Danburite, which is usually very pale. This design will help with dispersion and improve color…

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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Mars Dome: Faceting Design Diagram

Jeff R. Graham

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