Yes, SANDGLASSES is a Scrabble word!

Letter values in Scrabble US: S 1, A 1, N 1, D 2, G 2, L 1, A 1, S 1, S 1, E 1, S 1.

Is it a valid word?

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

timepiece in which the passage of time is indicated by the flow of sand from one transparent container to another through a narrow passage