Yes, KAURI is a Scrabble word!

Letter values in Scrabble US: K 5, A 1, U 1, R 1, I 1.

Is it a valid word?

KAURI is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

resin of the kauri trees of New Zealand; found usually as a fossil; also collected for making varnishes and linoleum
tall timber tree of New Zealand having white straight-grained wood
white close-grained wood of a tree of the genus Agathis especially Agathis australis

Also: kauri copal, kauri resin, kauri gum, agathis australis.