Beautiful yes, but wearing it with those materials present (when I wear something I do so on skin 24/7)?
I'm not sure if I'm overreacting as an abalone most likely contains more arsenic, but.........
There are trace amount of nasty stuff in a lot rocks. Malachite, for example is pretty nasty if you breath in the dust while sanding, Graveyard has very small traces of lead and mercury and a list could go on. Everyone should take precautions on any rock your are working on as a rule of thumb. I suspect this type of topic has been discussed before in our Forum. But, wearing it is not going to hurt you unless the Mercury is dripping out of the rock or you have a habit of chewing on your cabs.
Philip-