Hey I appreciate you doing that... erm was really wondering what the replica was constructed from; not important...but just interested!
Sorry for not being more specific earlier, but thank you again, best Buck.
It looks like sandstone ...
No problem. I think it's a concrete cast, but you could check by ringing the visitor centre:
http://www.heritageireland.ie/en/HistoricSites/East/BrunaBoinneVistorCentreNewgrangeandKnowthMeath/
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