Hi there I noticed you needed help with that red socket so I thought about putting my two cents in. As far as that Red Socket is concerned, there are other colored gems besides Red that count as Red too. Orange counts as Yellow and Red, Purple counts as Blue or Red. Prismatic Gems are every color. There aren't any orange ones with Stamina though. The Nightmare Tear is a prismatic gem with +10 to all stats. For purple though there are quite a few plus stamina and another stat gems. they add about 15 stamina plus the other stat. Hope this helps ya.