Which of these minerals is not harmful to human health?

I'll bet if somebody hit you with a 5 pound onyx brick, it would be harmful to your health!

to finish: I always thought all onyx was black. My high school ring was onyx & white gold. I lost it in our back yard. We found it 8 yrs. later, unharmed.

I got it right!

SaltyWillOWisp96651, I lost mine also...I let a girl wear it and she went swimming. I often dream that someone would find it and return ot to me.

Player #14650138, I hope it's found too.

Jo, it’s used a lot in oriental pottery. I have one my dad got over seventy years ago.

SaltyWillOWisp96651, so did I, it comes in a range of colours

I always thought all onyx