Precious stones for beauty - Not marbles but gems (compare 1 Chronicles 29:2). The phrase translated “for beauty” means “for its beautification,” “to beautify it.”
Parvaim is probably the name of a place, but what is quite uncertain.
Related Commentaries of 2 Chronicles 3:6
2 Chronicles 3:6
6 And he garnishedc the house with precious stones for beauty: and the gold was gold of Parvaim.