At Level 51, in gold/silver versions, Eevee evolves into Efui if it is day, and Barukki if it is night. If you use thunder stone at any level you will get Jolteon, Water stone makes Vaporeon and fire stone gives you Flareon.
At Level 51, in gold/silver versions, Eevee evolves into Efui if it is day, and Barukki if it is night. If you use thunder stone at any level you will get Jolteon, Water stone makes Vaporeon and fire stone gives you Flareon.