Diablo – Is it possible to preview an item linked in chat

Shift-Click the item in your inventory while having a chat box open, just like in World of Warcraft.

This isn't possible and basically useless, because in case of magic items the item's names are generic (they always consist of the general item name and additional, randomized, terms that depend on the attributes, such as "Sword of Vampirism" or "Sword of the Leech" for a weapon with life-steal) and also, magic items with different values can have the same names.

In case of rare's it doesn't really make sense either, since there is a huge range of rare names for weapons with the same attributes and bonuses. If you look for a rare with a certain name, you might be missing out on a differently named item, that has better stats at the same cost.

Because of this, there is a specific option included in the Auction House search function to search for stats that you want to have on your item.

If you want an estimate off the amount of gold you can charge, you should better look for items with the same attributes as yours.