Echo, a quick google search for "tongs for lifting stone" found this:
Kerb tongs on Ebay Which is for stone curbing, and for two people (one-handed, and there is a two-person-two handed version as well). Most of the other tongs in that search were more like ice or log tongs, and mostly designed for machine/crane lifting.
Your brick tongs might work? The ones that I have are adjustable (since there's often variation in brick sizes) so, you might be able to get a good fit? You could share the lifting with a helper, one tong for each person.
I've moved quite a lot of fieldstones, and granite curbing (that I could NOT lift solo) plus cobblestones, bricks, and blocks, using a good quality hand truck and some ramps to wheel it up into a truck or trailer. Big, fat tires on uneven/soft ground are nice, hard narrow wheels are fine on pavement.