SMALTS is a playable word

smalt Scrabble® Dictionary

noun
pl. smalts
a blue pigment
44 Playable Words can be made from "SMALTS"
   2-Letter Words (7 found)
   3-Letter Words (13 found)
   4-Letter Words (16 found)
   5-Letter Words (7 found)
   6-Letter Words (1 found)