Cobalt Blue Sea Glass
Manufactured glass
Markings and exact colorations may vary.
Deep blue glass from old medicine and poison bottles. The find that stops a walk.
- Typical size
- Half an inch to 1.5 inches
- How often it turns up
- Rare
- Collecting
- Usually legal to collect
- Handling
- Safe to handle
Freely collectible.
No hazard once fully frosted.
How to tell it apart
- Deep saturated blue
- Uniformly frosted surface
- Often thicker than green glass
Found one?
Photograph it and BeachNut ranks the likely matches with a confidence read, then logs it to your collection with the beach and date.
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Commonly confused with
Green Sea GlassManufactured glass
Both must be fully frosted to count as finished sea glass. Cobalt is far rarer and usually thicker.
More sea glass in the field guide
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