Umm..All I know is, 95% platinum with 5% Ruthenium, no copper added.
So a no go on the ultrasonic cleaner then. Any other suggestions?
Trying to find a jeweller a couple of hours from us who has the experience with Platinum, so I can have it cleaned/buffed up when I'm around there.
I've been reading a U.S forum where the ladies there are putting their rings in a mix of different things, even cleaning with windex and toothbrushes

I don't think I could do that to any ring...
eta: Thanks for the replies Queen

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