What does placing a diamond on Grandpa’s shrine do Stardew?

What does placing a diamond on Grandpa’s shrine do Stardew? The player can be re-evaluated at any time, if they place a diamond in the Shrine. This will cause Grandpa to show up again the first day after a game load, or the first day of the next season. Grandpa’s evaluation is based on a point system, based on various milestones reached during the gameplay.

The player can be re-evaluated at any time, if they place a diamond in the Shrine. This will cause Grandpa to show up again the first day after a game load, or the first day of the next season. Grandpa’s evaluation is based on a point system, based on various milestones reached during the gameplay.