Tarnish inside a Schlumberger bangle- is there a way to remove it???

[Mayacamas]

Hello,
I am interested in starting to collect Schlumberger bangles and I found one on 1st Dibs that is potentially a candidate... except it has gold tarnish I. The inside and one edge.

It’s a blue Dot Losange bracelet that I really like...

Thank you
Halee

 

[MCBadian07]

Before purchase ask the seller to take it to a Tiffany location to clean.