Yes, grade 4 and 5 materia with what red scrips you do get. You can also simply cease to actively gather red scrips and instead gather the mats which were the original purpose of the whole thing anyway. If you aren't digging at nodes for red scrips the only place you'll get them is from custom deliveries and adventurer squadron synergies. Both of those have alternatives, you can do crafter custom deliveries and there are other synergies you can get, too.

You may also wish to go back and get your Heavensward folklore and if you want to level miner or fisher, a set of augmented level 60 gear is available which will see you to 70.