Will you be in New York this weekend? Have you got a mysterious rock, bone, insect, or artifact tucked away and in need of professional, scientific assessment? Bring it to the American Museum of Natural History's annual Identification Day — they want to check it out!

On Saturday, June 16, scientists will attempt to identify your discoveries while showing you some specimens from their own collections. Items identified in previous years have included a whale jawbone, a green beetle bracelet from Brazil, and a 5,000-year-old stone spear point from Morocco.

Watch the video up top for some quick tips one what to bring (and what not to bring). And remember: this isn't Antiques Roadshow — so don't expect to have your stuff appraised. But don't let that diminish your hopes of identifying that prehistoric artifact collecting dust on your bookshelf.