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Abstract

Before 1980, sapphire was synonymous with blue. Few jewelers cared that the gem came in other colors—including yellow and gold.

Keywords

Great Marketing Chief Mining Color Diffusion Colored Stone Polished Sapphire 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Modern Jeweler Magazine 1990

Authors and Affiliations

  • David Federman

There are no affiliations available

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