As a quick background, minerals can be classified as gemstones based on their chemical composition, refraction, crystal structure, and optical characteristics. The classification and degree of ...

Forbes contributors publish independent expert analyses and insights. I cover upmarket jewelry, timepieces & ethical, sustainable jewelry. With one of the richest gemstone mining ...

Pomellato has a history of using colourful gems including ... Milanese concept of luxury”. Stand-out combinations include midnight-blue sodalite offset by fiery red spinels, and peaches-and ...