A complete list [[File:Gem-levels-blizzcon2010.jpg|thumb|350px|The full display of gems is not yet availablein Diablo III. The "]]A graphic was shown at the [[Crafting Sanctuary" video ]] panel at Blizzcon 2010 [http://diablo.incgamers.com/gallery/data/570/gem_levels.png revealed] all previous that displayed six types of gems (of the precious stone variety) from Diablo II are returning: [[Ruby|Rubies]], [[Sapphire]]s, [[Emerald]]s, [[Topaz]]es, [[Amethyst]]s and [[Diamond]]s. It's not known if  [[Skull]]s will returngems were not shown, and they have not been seen in the game. Skulls, or if there are any other precious stone types of gems , may be in the game and not revealed yet to , or might be revealedadded in expansion packs.