Dusk & Dawn stones?

Question

I'm looking for more Dusk & Dawn stones (in Diamond), I recently learned that you can get them using the 'pick-up' ability, but is there a specific place to look for them?

Answer 1

I am not sure about certain specific spots where to find Dusk and Dawn Stones, but you can get them using Pick Up with Pokemon ranging at a certain level.
Pokemon with the Pick Up ability that are:

Lv 51-60 will have a 3% rate of getting a Dawn Stone
and a 10% rate of getting a Dusk Stone.

Lv 61-70 will have a 5% rate of getting a Dawn Stone and a
10% rate of getting a Dusk Stone.

Lv 71-80 will have a 10% rate of getting a Dawn Stone and a
10% rate of getting a Dusk Stone.

Lv 81-90 will have a 10% rate of getting a Dawn Stone and a
10% rate of getting a Dusk Stone.

Lv 91-100 will have a 10% rate of getting a Dawn Stone and a 10% rate of getting a Dusk Stone.

Hope this helps! ~

Answer 2

The Dusk Stone can be found in the Galactic Warehouse and Victory Road. The Dawn Stone can be found at Route 225 and Mt. Coronet. Hope this helps!