deep red purple sea glass

I have just returned from St John USVI. I started looking for sea glass a couple years ago but only to pass the on the beach. Most of the things I have found are brown and green. On this trip however I found a piece of glass that is very different.

It looks almost black till you hold it up to the light or sun and is then a deep red almost purple color.

The piece is pitted on the outside but on the edges you can tell it is glass. It measures about 1" x 1" x 1/4".

It appears very old. Any idea if I have found a treasure?? In the little reading I have done, it seems that reds are rare.

Sorry, but I don't know how to upload pictures.

Thanks

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See Also:

Red Sea Glass is a Rare Find
Sea Glass Rarity Chart
Rare Sea Glass
Found Red Sea Glass Today!!