the ultrasonic cleaner will not harm your bracelet.
it will do a nice job of removing dirt, dust and particulates however, they do not remove tarnish.
you may also need to use a jewelry or mild metal polish to hand rub any tarnish.
I have had best results by using the polish first, followed by the ultrasonic, then a light rubbing with a clean towel, followed by an air dry.
What about Rubies on gold bracelet, will it harm them in the ultrasonic
the ultra sonic cleaner will not harm precious metals or gemstones.
you should have no problems cleaning your bracelet in the ultrasonic cleaner, rubies and all.
Your information about pandora bracelet was great, ultrasonic was unreal better than cleaners. Thanks
thanks for the feedback Jo.
best of luck.