Some interesting sea glass trivia: if you see bubbles in the glass, it usually means the glass is older and made before automated bottle production. If you found a sea glass shard with lots of small bubbles it could be from the 1700's! Thick sea glass shards also indicate an older piece. Many years ago the bottles were made thicker so that they could be used repeatedly and avoid breakage. Most of the common colors come from mass produced bottles which were produced after the 1920's. The most rare colors come from tableware.
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