Necklace for this outfit

[Goandplay]

Party coming up soon.
My outfit is a jumpsuit with cape style arms. Smooth at the front, neckline sort of t shirt height.
It’s all black.

Can anyone suggest a necklace to go with the outfit?

I quite fancy something with brightly coloured gems but open to suggestions.

Maybe a longer necklace?

Definitely not a choker length/style.

Thank you.

I quite like this, OP. Not sure if is the look you're going for though... www.etsy.com/uk/listing/637024319/vintage-necklace-multicolour-semi?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=multi+gem+necklace&ref=sr_gallery-1-14&pro=1

Bumping for anyone who might have better ideas in S&B.