how old is 1) Frosted 2) Dark 3) Black seaglass

by Geoff
(UK near Seaham)

I have a few questions I hope you can help me with.

1) How old is frosted seaglass? (So the colour is visible but it has a frosted appearance.)

2) How old is dark seaglass? (ie the the type of glass if you shine a light under it it appears green,amber,blue etc)

3) How old is Black seaglass? and can you shine a light through this? (I have numerous pieces that are definitely glass but you can't shine a light through them at all).

Thanks for your help


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Jun 16, 2020
Dating Sea Glass
by: David

Thank you for your good questions.

There is no way to identify the age of sea glass. If it is well-frosted it is likely more than 10 years old but even that is just a guess.

The dark and black glass has been around for centuries and is still being made.

Without some other clearly identifying marks, age is anybody's guess.


David & Lin

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