Yeah soooo.... I've been watching a lot of Steven Universe for a while now, and aftering some talking with my friends, I ended up creating my own little gemsona. Here is his info:
Gem: Sardonyx (black/white variant)
Age: 22+ (possibly be older, but chooses to appear this way.)
Species: Gem/Human Hybrid? (hints at being a hybrid, but hasn't outright stated it.)
-Enjoyable for the most part, Sardonyx is outwardly friendly towards normal strangers and cocky about his strength/wits.
-He prefers to be around human companionship, he dislikes the presence of most other gems, especial gems of a rare value.
-Does not consider himself heroic, but is willing to save or protect someone if he is in the vicinity.
-Standard Gem Powers: All standard gem powers (examples: transformation, barrier, gem fusion).
-Gem Power Strengthen: Sardonyx can enhance the powers of another gem or his own, but drains his stamina if overused.
-Weapon Summon: Lance (can transform into variants such as..)
-Sword variant: Sardonyx's Lance shrinks greatly in size to be wielded as a single-hand sword.
-Drill variant: Sardonyx's Lance spins from it's point rapidly while handle extends more for thrusting.
-Sword/Lance + GPS = Empowered Sword/Lance strikes, weapon blade glows black with white outlining during the empowerment.
-Drill + GPS = Finishing Thrust, Sardonyx can finish a target via empowering his drill, doing so turns him and his drill into a maelstrom of black and white energy, that pierces his target(s), the area where his drill lands gains a triangular crater.