Finding a diamond 'on the ground' logically means -- in populated areas -- that someone has lost a diamond. The found diamond will probably be cut and polished.
If you are in an area where diamonds are mined, you could 'find a diamond on the ground'. The diamond in this case, however, belongs to the site holder or land owner, and you are obligated to delivery it to the owner. In this case, the diamond will be a raw stone, and unless your eyes are trained to recognize the stone as a raw diamond, you may not be motivated to pick it up.
Groundwater is found in the ground
Probably nothing you can bury will ever turn into a diamond, since it's not humanly possible to dig deep enough to access the enormous pressure and intense heat required to form a diamond from carbon.
Similar, the water table is where we find ground water, ground water is simply water in the ground
In the ground.
You can learn a lot about diamonds, below.
go under ground to find them
you go under ground and dig and you might find one
You can find it at the Solaceon Ruins or dig it up under ground.
go under ground and dig (you can only get cranidos in dimond sorry :(
You can find one under ground using the explorer kit (rare)
just get a rock or ground Pokemon and then level it up and it will learn earthquake
you can find it under ground in poke'mon diamond, pearl and platinum. in ruby sapphire and emerald you find one meteor falls.
You find them on the ground and some Pokemon with the special pickup ability will pick them up.
you must dug under the ground and find a fossiel it is like a bal with 4 nails
buy them in veilstone city "mall" place.or find them in poke balls on the ground.
He is at the lighthouse. Bring ground types and stuff because he is the electric leader!
in Pokemon diamond ,pearl ,and platinum you find them underground other Pokemon games you are most likely to find them on the ground in small poke balls