Amblygonite is too soft to use for most jewelry, particularly rings ... brown that is heat-treated to turn the stone sapphire blue, amethyst or violet. Heat treatment deepens the blue color ...

SHOPPING: Formula 1 is back in the United States with the upcoming race in Miami taking place on Sunday, May 4. This is the third year Miami will be hosting Formula 1 and it's one of the most ...

Among the many items covered are a new discovery of pink garnet from the Umba Valley area in the Tanga Region of Tanzania, trapiche grossular garnet from China, bicoloured pezzottaite-beryl from a new ...

With 170mm travel, refined geometry, powerful motor, and a svelte carbon fiber frame, the new Ari Timp Peak makes the shuttle run half the fun. This 2nd gen Timp Peak is built around the newest Bosch ...

A look at the history of analytical instruments used for gem testing. UV-Vis-NIR spectroscopy measures how gemstones absorb and interact with light across the ultraviolet, visible, and near-infrared ...