I have no idea what this is...

[StirFX]

Hi, I stumbled across this whilst metal detecting, found part of a can then to hear another beep. So hit the dirt again and hit a old bottle with quark still on, then to hear another beep then I found this. I have no idea what it is...

Sorry for bad quality photos, I will upload better photos tomorrow.
It has a teal blue, whiteish look to it.

 

[Martin]

Not the best photo, probably worth waiting for the other photos to be uploaded.