Cornflower Blue Sea Glass
Cobalt-tinted glass
Markings and exact colorations may vary.
A softer blue than cobalt, from Bromo-Seltzer, Milk of Magnesia and old poison bottles.
- Typical size
- 0.25–1 in
- How often it turns up
- Rare
- Collecting
- Check local rules
- Handling
- Safe to handle
Loose glass may be collectable where permitted; follow park and protected-area rules. Do not take from archaeological sites or wreck contexts. Dispose of sharp modern litter safely.
How to tell it apart
- Medium periwinkle blue, lighter than cobalt
- Frosted, usually small
- Often shows bottle curvature
Found one?
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More sea glass in the field guide
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