Another newbie question

[Kartoffelsalat]

Do the shrines ever regenerate in one game?

No, the gem shrines never regenerate. Most of the others do, and all the times for regen are on the Arreat Summit. Man, I love that site. :D

Here's the AS info on Gem Shrines:

Gem Shrines - Upgrades a random gem. If you do not have a Gem, the Gem Shrine will give you a random chipped Gem. You can use a Gem Shrine to upgrade a Gem to the next level. Perfect Gems cannot be upgraded. If you have several Gems in your inventory, a random Gem will be upgraded. If you want a specific Gem upgraded, drop all the Gems in your inventory except the one you want to upgrade. Then click on the Gem Shrine. Gem Shrines will not upgrade Gems that are already placed in armor or weapons.


What do Gem Shrines look like?
They vary in appearance depending what area you are in and which act you are playing.

Will a Gem Shrine upgrade a Gem that is already socketed?
No.

Where can I find Gem Shrines?
Gem Shrines are rare and randomly located. Some areas have more Shrines than others. Perhaps you should scan these areas to search for Gem Shrines.