How do you get summon gems on dragonfable?

There is NOW four summoning gems and they are.....

reaver-darkness, in a locker mission. (requiers a code to open the chest)

rokturo-earth, in a soul weaver mission.

illumina-light, in a fountain after blackwyn tomb. (must complete blackwyn tomb in moonridge)

skull crusher blaster-fire, from a finale 13th mission which is (no longer available).