Partly cloudy. Medium chance of showers, becoming less likely later tonight. The chance of a thunderstorm. Winds southeast to southwesterly 15 to 20 km/h tending northeast to southeasterly in the ...

A hand-held flashlight reveals the green color of a rough emerald from the Coscuez Emerald mine in Colombia. Photo by Eric Welch/GIA. Emerald is the green to bluish green variety of beryl, a mineral ...