no. the sun stone was introduced in Pokemon gold and silver.
victory road
Pokemon requiring a stone to evolve:Eevee - Thunder stone, Jolteon (you can't find this Pokemon in Ruby) Eevee- fire stone, Flareon (you can't find this Pokemon in Ruby)Eevee- water stone, Vaporeon (you can't find this Pokemon in Ruby)Sunkern- sun stone, Sunflora (you can't find this Pokemon in Ruby)Jigglypuff- moon stone, WigglytuffSkitty - moon stone, DelcattyNidorino- moon stone, Nidoking (you can't find this Pokemon in Ruby)Nidorina- moon stone, Nidoqueen (you can't find this Pokemon in Ruby)Growlithe- fire stone, Arcanine (you can't find this Pokemon in Ruby)Gloom- sun stone, BellosumGloom- leaf stone, VileplumeStaryu- water stone, StarmiePikachu- thunder stone, RaichuLombre- water stone, LudicoloNuzleaf- leaf stone, ShiftryVulpix- fire stone, NinetalesHappiny- oval stone Chansey
You can get it on Route 25 from Bill's grandfather.
you find the sihny ston in mewtoo's cave
go underground and keep digging till u find a water stone or a fire stone
You can find a Water Stone on Wednesdays in the Pokeathlon Athlete Shop for 2500 points.
You can get the moon stone in the cave when you are when you are heading to the Kanto Reigon.
You can purchase a Dawn Stone at the Pokeathlon with points on certain days.
You find him at the Pewter city meuseam.
to get the sun stone in Pokemon silver version you have to place first in the bug catching contest which takes place on Tuesday's and Thursday's just south of goldenrod
You can buy stone edge at the battle frontier TM stand.