Board Thread:Questions and Answers/@comment-92.237.149.247-20130211092347/@comment-199.27.76.22-20130211105153

Yes, All of the Omega stars needs to be fully charged, and everything except the two amulets are consumed in the process.

The two amulets being the Evertide and the Volcanite Amulet.

So to make a Gem armor set, you are going to need 4 fully charged Klein Star Omegas