Highly prized for its lagoon blue colour rather than its clarity, demand for the stone sent prices escalating to $2,000 per carat at gem shows around the world when it was introduced in the late ...

Birthstone for October. Tourmaline is the modern birthstone for October.. The gem comes in a range of colors, such as pink, red, green, blue, violet and black. This is fitting since tourmaline's ...

Paraiba tourmalines, Colombian emeralds, changing-color sapphires and opals were among the precious gemstones set on the ...

Olivia Young is buying as much tourmaline from Afghanistan as she can, because these newer deposits offer “incredibly beautiful bi-chrome material that’s blue-green in one direction and grass ...