You're opening yourself to be sued by Ripple if you're selling their logo to people in this way. Ripple is a private company, that company owns the logo and can sue anybody who seeks to profit from using the logo without permission.
You should reach out to the Ripple team and see if they're OK with your project, in this scenario, it's not better to ask for forgiveness rather than permission.
Might want to check with them before making a bunch of these.
EDIT: looks like this point was already made by HabBear
Really?
Every single fidget spinner looks like the Ripple logo....... I think you are good
This isn't Disney we are talking about here..... Make the coin!!