Yes, you can go to the Crater of Diamonds State Park in Arkansas and dig for them.
Read more, below.
you cant find rayquaza on diamond or pearl its from Emreld
You can't find Steven Stone in Diamond
sometimes you can use pokeradar. if you us pokeradar and get 599 smurgles the 600th will be a wyruant
You can find Pidey in a Pokemon Outbreak in Pokemon Diamond
you can only find a cranidos on diamond and a shieldon on pearl
you can find stunkys on diamond on route 214.
you cant find it in diamond only emreld and embedded tower
You cant find it, it's not an HM in Diamond, Pearl, and Platinum
Twenty carats is large for a diamond gemstone. You may find the one you want to buy at an auction house. Depending on the colour, cut and clarity, a diamond of this carat weight. You should expect to pay several million dollars US. (For example: Today at Blue Nile, you can buy a 16+ carat diamond, and spend US$600,000+, or a 14+ carat diamond, and spend US$1,500,000 -- the difference being the clarity of the diamonds.)
Take your diamond to a jeweler who can test the stone to confirm that it is or is not a diamond.
You can find diamond glitter at most major arts and craft stores.
where do i find a totodile in Pokemon diamond/pearl on nintendods