They look like skeet discs. Many are black with yellow lettering before weathering.
Aug 23, 2010
Pretty darn sure by: Anonymous
Yes, glass. There is writing on some that would indicate glass. And it is not clay or pottery, but glass.
Aug 22, 2010
Re: by: Jen
Are you sure its glass? I've found pieces like this that I thought were glass, but it turns out they were just shards of those skeet things people practice shooting at...
Aug 17, 2010
BLACK SEA GLASS - Shilshole by: Anonymous
Found at golden gardens beach Shilshole. There is no color except deep black. Went back 2 weeks later and found another load!!
Aug 16, 2010
WOW - Black Sea Glass by: Pam
Very cool! Where near Seattle did you find all those black pieces? Have you held them up to the light to see what color they are?