I think the 4Cs are a bit outdated. The world has changed.
Useful link:
https://www.diamonds.net/News/NewsItem.aspx?ArticleID=63680&ArticleTitle=Do%2bthe%2b4Cs%2bStill%2bMake%2bthe%2bGrade%253f
P.J.Joseph's Weblog On Colored Stones, Diamonds, Gem Identification, Synthetics, Treatments, Imitations, Pearls, Organic Gems, Gem And Jewelry Enterprises, Gem Markets, Watches, Gem History, Books, Comics, Cryptocurrency, Designs, Films, Flowers, Wine, Tea, Coffee, Chocolate, Graphic Novels, New Business Models, Technology, Artificial Intelligence, Robotics, Energy, Education, Environment, Music, Art, Commodities, Travel, Photography, Antiques, Random Thoughts, and Things He Like.
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Tuesday, June 04, 2019
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