Emily Dickinson Lexicon

PITCH'-STONE, n.

A mineral, a subspecies of quartz, which in luster and texture resembles pitch, whence its name. It is sometimes called resinite. Its colors, are several shades of green; black with green, brown or gray; brown, tinged with red, green or yellow; sometimes yellowish or blue. It occurs in large beds and sometimes forms whole mountains. – Cleaveland.