Blue Sea Glass Jewelry
Cobalt Blue (Noxzema, Milk of Magnesia, Bromo, Evening In Paris, Vick's Vapor Rub, Poisons Bottles, etc.)
There were many items made for this blue glass. Many medicines and even poisons were bottled in cobalt blue glass.
The magical like quality of blue glass is why it was used for medicine and why you still get that thrill finding one.
Among the most desirable of sea glass colors considered lucky as it is very lucky to find one now.
1 In 200 - 300 Sea Glass Pieces Found Will Be Cobalt Blue (Dark Blue)