I won't recommend you use Cor Lapis as fuel for transmutation in Parametric Transformer. Simply because it's rare compared to other materials like mint or berries that you can find in abundance, materials like berries and mints are pretty standard, and as you'll roam around the world, you'll find plenty of them to collect. It's better to use those materials as fuel and save materials that you can use for ascending characters. You sure don't want to run out of ascension material for characters while levelling them up.