Alexandrite is the lovely fusion of my two OCs Kyanite and Fluorite!
Alexandride as a gem as the power of precognition (like Garnet for example she can see the possibility and logically know what will happen), and has the ability to heal the gems which she have an emotive relationship. Her weapons is a nunchaku which is the comination of the triden spear of Kyanite and the bludgeon of Fluorite.
As a fusion of Kyanite and Fluorite she have the power to increase the love between every types of living creatures she meet. With the empaty nobody want to injure any others, so she have the power to decide if the creature can be saved and redeemed as part of her crew or killed for the betrayal of her race.
Her skin is the natural color of the Alexandrite, and she have the "ability" to change her color it's not something militarily useful but it's a royal ability that just a few rare gems have just like her. And she have four legs because we need gems with four legs.
Steven Universe by Rebecca Sugar CN
Kyanite, Fluorite and Alexandrite by me.