Green Rock Identification

[GammaDoppler]

Identification please?

Dug this up in the dirt years ago when i was in primary school in London and it has been sat on my shelf ever since (tried google for id but nothing came up).

 

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[Eu_citzen]

It kinda looks glass-like. I'd like some better pics.

 

[loco oro]

It looks worked shaped, that may be a artifact, London. ....maybe Merlin dropped it lol,