Cultured Cortez Pearls have been gaining a larger share within the global cultured pearl market thanks to successful pearl farming operations in the Gulf of California, aka Sea of Cortez in recent years. Indigenous cultures of…
Featured ArticlesMost retailers and appraisers in the Western World lack the knowledge to judge the quality parameters and value of natural untreated jadeite. This is because natural jadeite material in all qualities is scarce in the western marketplace, and because they lack literary references to rely upon.
*Free Featured ArticlesColor modification of ruby and sapphire by heat treatment processes has a long tradition in the gemstone industry. First written reports by Bhojarajah and Al Beruni date back to the 11th century (see Hughes, 2017),while…
Featured ArticlesEasy access to all articles from the The Gemguide May/June 2020 Edition.
Featured ArticlesFancy colored diamonds are breaking all records at auctions for price paid per carat. Blue and red diamonds are considered the most expensive natural gems by weight in the world.
Featured ArticlesThe market for natural fancy color diamonds experienced substantial growth during the past two decades. This market expansion resulted from a combination of increased supply and a well-organized marketing campaign that grew consumer demand for previously less desirable grades and colors.
Featured ArticlesEmeralds are a welcome business for Ethiopia. The recently discovered gemstone deposits in Ethiopia contribute to the utterly needed economic growth of this East African nation. A few years ago, during an interview on international TV, a…
*Free Featured ArticlesThe jewelry industry has a chance to make a real difference in the health and quality of life for millions of artisanal gold miners, their families and communities. Metallic mercury is a permanent, potent neurotoxin that is increasingly pervasive in the global environment. We can take action to reverse this trend.
*Free Featured ArticlesAfter more than a decade, Greenlandic ruby has entered the market in commercial quantities. The combination of affordable pricing and traceable sourcing meet the needs of the current market climate. The flux healing of the…
*Free Featured ArticlesIdentifying an old European cut diamond may seem simple but there is a set of GIA standards that determine from their perspective whether it is or is not. This set of standards is not widely…
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