Powder separation moldmaking

Article Abstract:

The article provides instructions on making a tight mold using the powder separation and hand-cutting method and pre-vulcanized keys that can ensure symmetrical displacement from the silicone rubber. The registration mold has good edges that eliminate the need for the model maker or jeweler to hand-cut the perimeter.

Special dies, tools, jigs & fixtures, Industrial Molds, Industrial Mold Manufacturing, Molds (Forms)

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Star of the Southwest

Article Abstract:

The author discusses tips on making a simple square cushion design for cutting bright gems such as quartz, citrine and amethyst. The pattern, named Star of the Southwest, was developed using a ray-tracing software. It creates attractive facets even on stones with relatively low-refractive indices.

Gem carving

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Practical gem photography

Article Abstract:

Instructions on how to photograph gemstones are provided. The necessary equipment, basic setup, exposure, and lighting are discussed. It is suggested to clean the gemstones with a stone-cleaning cloth prior to photographing them.

Portrayals, Photography, Close-up, Close-up photography

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