What jewelry to match a pink and black gown?

I’ve been having trouble finding matching jewelry. The dress can be viewed here: http://www.flirtprom.com/Collection
It’s the second one from the left in the third row, or P4691, in the pink and black color scheme.

I’m having issues finding jewelry to match it. If specific pieces could be found (etsy, etc.) please provide the link! I’ve been having trouble, whether the piece wasn’t the right shade of pink, or the black was too scary (I want black the color, not black in mood).

I appreciate any suggestions! :D