Costume jewelry???

[Beep_dig_repeat]

Found this yesterday at a local park. Can't find any markings on it.
Any help greatly appreciated. Thanks for looking.

 

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[tamrock]

Bolo Slide ??

 

[HuntinDog]

would say yes on it being costume.
Kind of has that alien look.
Cool find... a ring is a ring...

 

[Bruce R]

Brass monkey !