Go underground
There are two Pokemon that evolve with a sun stone. Gloom into Bellosom Sunkern into sunflora
Gloom can evolve into Bellusme if you give it a Sun stone.
Gloom and Sunkern.
Gloom → Bellossom and Sunkern → Sunflora
gloom to bellossom. and sunkern to sunflora.
You can get a sun stone by digging underground using your Explorers Kit.
Gloom- Bellossom Sunkern- Sunflora
you go to the undergorund and find it
The sunstones causes the following Pokemon to evolve:Gloom → BellossomSunkern → Sunflora
There is no Pokemon found solely in Diamond version that can be evolved with a Sun Stone. Gloom- can be found in Routes 224, 229, and 230. Sunkern- You need the Poke Radar to find this Pokemon in the Northern area of Route 204.
You can get a sun stone underground,but its VERY hard to dig one so good luck Hope this works out.
The sun stone was first introduced in the Pokemon Gold and Silver games. This stone evolves Petili, Gloom, and Sunkern.