The pic of the "stone" was a bit anticlimactic. You have our permission to lie and use a Google pic next time.
I spent many a day raking & burning pine needles in my youth only to learn there's mofos on this beeb that buy bales of them to bust open & spread around about their property.
The stone needs a name... I would nominate "Rosie"..... but there ain't a whole lot of it. Maybe "Sharon Stone".... since OP gave us a peek?
Have you tried asking your Wife if she'd carry it up the stairs for you? Any neighborhood girl guides that could help you out? Maybe they could get a badge for it.