Pink-to-red coral has a long history as an ornamental gem material in jewelry, carvings, and sculptures. However, due to a variety of environmental and legal factors, the supply of high-quality, ...
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Figure 1. The untouched opal specimen displays the yellow coating caused by years of storage in silicone oil. Photo by Ted Grussing. In the 1980s, the author and his wife, Corky, acquired large ...
This course examines jewelry’s important features and how they combine to give a piece its unique value. Content includes the unique qualities of precious metals, how to describe them to customers, ...
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