Welcome to Eorzea!

Four sites that I know of which might be what you're looking for are:

SE's official equipment and item database (the 'Eorzea Database') on the Lodestone. (scroll to the bottom of the page).

Gamerescape's FFXIV site.

The original FFXIV Wiki page (Originally for version 1.0, it went inactive for a long time but has since been reborn fittingly for ARR)

Allakhazam's FFXIV page. (now mostly a Wiki in itself).

Hopefully this has helped.