Finding blood in your urine if you are on blood thinners requires a full hematuria workup. These medications can also change the color of your urine: Phenazopyridine (Pyridium), a drug that numbs ...
Emeralds are formed when chromium, vanadium, and iron are present in the mineral beryl. The varying presence of these three elements gives emerald its range of color. Chromium and vanadium make an ...
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 ...