Stichtite,

basic, magnesium-containing mineral, which is formed during the conversion of chromite-containing serpentine. It has a pink to violet color and is rarely offered completely pure. Inclusions of stichtite in serpentine are called "atlantisite".

Serpentine,

a group in the monoclinic crystal system of chrystallizing silicate minerals. Its colors range from mostly olive green, but occasionally yellow, brown, red, gray and black to white.