What is this Large Green Serrated Sea Glass?

by Meagan Egg
(Southern spain)

I found this piece a few months back.

I found this piece a few months back.

I would love to know what to call it

Comments for What is this Large Green Serrated Sea Glass?

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Jun 08, 2016
 Hobnail insulator
by: Anonymous

The correct term for those little round repeating bumps is hobnail. This is from a telegraph or electrical wire insulator. Nice find.

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