From Diablo Wiki
|Description|| Chatty Gem|
You feel like talking to someone.
|Damage||(-) - (-)|
|Attack Speed||Expression error: Unexpected round operator.|
|Armor||Expression error: Unexpected round operator.-Expression error: Unexpected round operator.|
|Durability||Expression error: Unexpected round operator. - Expression error: Unexpected < operator.|
“It seems to be active but it's difficult to tell.
- The Gibbering Gemstone is an exact replica of the Chat Gem, a user interface item in the main lobby for Diablo II on Battle.Net. You could click on it, and it would say it activated, but would not do anything else.