The slow-moving, silt-laden St. Francis River widens between Lake City and Marked Tree, turning into more of a swamp than a river in what's known as the Sunken Lands. This is the area where the river ...
The element chromium causes natural pink, red, and violet-to-purple colors in topaz. Imperfections at the atomic level in topaz crystal structure can cause yellow, brown, and blue color. Brown is a ...
Rarely, peridot can have an extraterrestrial source, being contained in meteorites that have fallen to earth. The color range for peridot is narrow, from a brown-green color to yellowish green to pure ...