Crossword clues for October's birthstone 4 lettersAnswerClueOPALAnother October birthstoneOPALFiery October birthstoneOPALOctober birthstoneOPALAn October birthstone.OPALBirthstone for October.OPALOctober's birthstoneOPALSOctober birthstonesBERYLSOctober birthstonesTOURMALINEAn October birthstoneBERYLOne of October's birthstones.OPALINEResembling October's birthstone.TOURMALINEOne of October's birthstones