I meant specifically the wire frame "These fabrial-gems are encased in a metal wire frame, which determines the effect of the fabrial, along with the type of spren." (Coppermind)
Yes, that's what I said earlier, it would just act as a hunk of aluminum. The only reason I think it might do something is The Metallic Arts using aluminum and the fabrials following their patterns.
Knowing aluminum it's effects on fabrials are probably either,
A: The fabrial stops working
B: The thing the spren controls vanishes (that's more leacher though)
No, I mean they capitalize Nightblood, like NightBlood. I'm guessing they say ShardBlade, HonorBlade, and CoinShot, horrifying stuff like that. You capitalize the first letter in Coinshot, they capitalize each word independently like a monster.