Can Michael Valitutti enlarge the size of a ring I bought of his?

Hi. Bought a ring of Michael Valitutti. It is not my size.
Can I contact him – how – his email? Or, can he enlarge the ring to fit me.

The bottom part, where a jeweler would enlarge a ring, has it that the usual ring. Is this a problem?

If anyone knows how to get in contact with him, please let me know.
Thanks, Kaye