▲ 13 r/glassblowing+1 crosspostsAny idea what can cause these grooves? Manufacturing defect maybe?u/Reliquat — 1 day ago
▲ 14 r/seaglassFollow-up: some light through my pirate glass findsOriginal post: https://www.reddit.com/r/seaglass/comments/1tc9n4m/yesterdays_finds_with_some_big_dark_chunks/ u/Reliquat — 8 days ago