a harp made of marble

The harp is nearly as high as a standing elf. Next to it is a softly cushioned seat and its decorations show vines and of dancing elves that wind itself around the harp's body. The silver strings seem to shimmer with the light of a merrily dancing stream of clear water when the sun from a unclouded sky falls onto it, getting reflected a thousandfold.

If you could only pick it up...

You identify a harp made of marble.
It is an unsellable object.
It weighs fifteen stone and ten pounds, and it is worth about ten gold.
Its keywords are harp, marble, and white.