help with silver. 925 to 950.

[RichardNy]

hi good morning
i have a quetion
i have a 925 sterling silver..so how can i turn this 925 silver into a 950 silver?
i have a fine 999,9% silver too.

have a way to do if i adda fine silver or so?

thank you all in advance.

[china]

Add more fine silver until you have 95%