Starting as bits of broken glass, tumbling around in the ocean;

the glass begins to be broken down by the high alkaline PH in ocean water reacting to the lime and soda in the glass.

It is then tumbled smooth by the natural action of the tides.

Sea glass washes up on beaches all over the world.

Collectors value pieces based on rarity, color, size and shape.

Essentially, this makes sea glass highly valuable litter.