Could this be some form for Black Seas Glass?
None of the pieces show any light through them so I'm guessing they might just be rocks. The oblong piece shows some oxidation on the reverse side so I was wondering if that meant anything. The others just stood out to me on the beach and I'm just looking for any information as they resemble some of the pieces shown on other sites. Any insights are helpful...I found them on North Topsail Island NC and Emerald Isle where I know there was some pirate activity. Thanks for any insights!