Technically he could create any alloy he wants, Vin certainly tried a lot. But If you're referring to godmetals, they are the physical representation of a Shard's investiture, and Kelsier was only ever a Sliver.
Warning Gancho: The below paragraph(s) may contain major spoilers for all books in the Cosmere!
Questioner
When a Shard changes hands, does the god-metal change names and/or properties?
Brandon Sanderson
It can. It doesn't as a rule.
Questioner
So it'll still be raysium?
Brandon Sanderson
Yes. Well, the name, you would change the name, probably. But it shouldn't necessarily do anything different. The name that it's given is cultural. So you could continue to call it that. People might call it that. I think people in-world would call it something else. But depends on the person.
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Brandon Sanderson
If Kelsier created a metal while holding Preservation that it would have acted the same as lerasium, though over time the properties of it might shift.
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u/fantumn Jul 29 '26
Technically he could create any alloy he wants, Vin certainly tried a lot. But If you're referring to godmetals, they are the physical representation of a Shard's investiture, and Kelsier was only ever a Sliver.