He's the wizard that created the spells. You totally could cast them without diamonds if you just altered the formula or phrasing, but he happens to own a pocket dimension full of diamonds
Society has come to expect you use the spell that requires a diamond. “I know we could revivify with a sapphire, but I’ve always wanted to do it with a diamond.”
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u/[deleted] Nov 13 '21
De Beers is the name of the god that regulates all magic related to diamond components.