A mysterious black diamond stumped experts for years until one Belgian cutter invented a new machine to shape the 612-carat ...

Once a thriving city in Iran’s Sistan and Baluchestan Province around 3200 B.C., Shahr-e Sokhteh now stands abandoned. Shahr-e Sokhteh, which means “Burnt City,” was located at the junction of trade ...

An important group of jewelry and gemstone professionals were on hand in two cities to celebrate the unveiling of a new book about the rare and valuable gemstone, paraiba tourmaline. The book, ...

This brief article is a continuation of the detailed analysis we did on high-priced gems and their value. If you want more details on gemstones, read 20 Most Expensive Gemstones in the World.