flint Synonyms

obdurate stony granitic flinty shiny grey stone shiny black stone lighter can lechartelierite krzemionki hornstones hard gray stone amorphous silica ansalon caramon hard black stone colourless glass basalt carnelian chert firestone flint glass novaculite agate rock silex stone tridymite opal glass cristobalite flintstone volcanic glass Flint River hard greyish-black stone argillite