Abel already made a satisfying magic staff for Wizard Allenby before he left Denan City. He also brought along large inventories of shattered gems with him, which he sent from countless large magic mines within the Kingdom of St Ellis.
Those gems were the scraps of the mines. They were even lower quality than low-rank mana gems.
They were not powerful enough to support any magic circle, so they could only be processed and turned into jewelry.
Each mine had a limited amount of mana gems, but there were almost countless scattered pieces. This was why Abel could get so many in such a short amount of time.
Varaya's ring would only take up a corner even after storing inventories of scattered gems within it.
Abel returned to his magic tower and immediately entered the dark world. Not to battle, but to combine those scattered gems into perfect gems.