The stone's hue can range from a pale pink to a medium-dark pink ... comes from "microscopic inclusions of aligned silicate ...

Lake Superior’s shoreline is awash with the tiny pieces of garnet, the birthstone for January. Garnets are often thought of ...

Pink ChalcedonyA pink chalcedony shows ... allowing beryl to form semiprecious stones such as aquamarine. Minerals and gems are classified by their physical properties, including hardness, luster ...

Pink diamonds are graded, in terms of value, according to the four Cs — color, clarity, cut, and carat weight. Lucapa hailed the finding of the stone as “historic.” And Angola's Mineral ...

This mineral — halite — gets harvested by drilling the rock face, crushing the salt, and splintering it into pieces. So is pink salt intrinsically healthier, and therefore should cost more?