Gem energy

Gem energy is exclusively an ability of the Antares family after Garnet and Topaz. Each has a random type of gem on a random spot of their body, which works as a core of an individual energy the user may not even normally have. The gem people can use the energy of their gem in ways that differ for each of them.
 * Fun fact: touching and rubbing the gem gives the gem people random increase in hormones for unknown reason, also making them act primitively