Repolishing Star Sapphire

[peachster]

Hello -

I have a ~7.5 ct star sapphire in a 1950''s setting with diamonds, a rather classic style of cocktail ring. It is a nice stone, but somehow over the years I have made a couple of small scratches to the stone''s surface. I think it needs to be repolished, as the scratches are not deep. Any idea where/how I could get this done?

Thanks,
Peachster