Noah Webster
Pearl-stone
PEARL-STONE, noun A mineral regarded as a volcanic production. It occurs in basaltic and porphyritic rocks, and is classed with pitch stone.
PEARL-STONE is a subspecies of indivisible quartz.
PEARL-STONE, noun A mineral regarded as a volcanic production. It occurs in basaltic and porphyritic rocks, and is classed with pitch stone.
PEARL-STONE is a subspecies of indivisible quartz.