What sort of white paint or filler could be used to cover a crack in white lava rock carved jewelry?
Try some gel epoxy , with the addition of some white acrylic paint to disguise the crack. Do a few trial runs on some other object to see how the paint matches up.
believe it or not, plain old white toothpaste...! keep dabbing it on little bit by little bit unti just a tiny bit is above the level of the rest of the piece.... it willshrink a little but can be redone.. use emery boad to smooth off
