Ritual is one of the skills in Gemcraft Labyrinth, and is available with the Premium edition only. This skill increases the mana you have depending on the number of battle amulets that you have obtained. There are 20 skill levels, and it takes a total of 80 skill points to max out this skill. (read more...)
Gemcraft Wiki is a website totally dedicated to providing you with information on the very popular tower defense game series. Gemcraft is a tower defense flash game series produced by Game in a Bottle. The basic concept is that you use gems and power them up to destroy monsters. There are 3 games out to date.
If you want a gem to have a strong special ability, but also benefit from the triple (or dual) bonuses, create 2 or 3 grade 1 gems, each of a different type, combine them together, and then build onward using only pure gems of the type you want to boost.