Rhombic triacontrahedron
Article Abstract:
A rhombic triacontrahedron is a sphere with 30 facets. It is made by dopping a rough cube, preforming a rough cylinder and then centering the stone on the dop. The facet measurements can be obtained by dividing the diameter of the cube by 3.23 then working on the facets by the standard measurement obtained.
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1992
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Challenged again
Article Abstract:
Two faceting techniques present a challenge to budding jewelry designers. These are named after grandmothers and are illustrated through Gemcad. Specifications are also listed to aid potential facetors in executing the designs.
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1992
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A cushion arrowhead
Article Abstract:
The cushion arrowhead facet cut was designed to deepen the color of blue topaz. It is named for the shape of the facets formed. Detailed instructions to form the cut are presented.
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1992
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