While not everything about Pearl's background is known at the moment, it has been confirmed that Pearls are a sub-species of Gem who are created to be only servants for higher-ranking Gems. The Pearl given to Rose Quartz however was a different story, as Rose pushed her to think for herself and become her own Gem. However, Pearl still stayed loyal to her "programming" and was extremely dedicated to Rose, even jumping in front of attacks for her and being forced into regeneration in her place. Eventually, Rose met a human named Greg, who Pearl took a great disliking to at first, believing he would steal Rose away from her. Rose eventually got pregnant with a human child, meaning she had to give up her existence for him, which emotionally scarred Pearl. However, despite this, she wound up becoming a strong motherly figure for Rose's son, Steven, and thanks to his help, she managed to learn more and more how to be her own person.
Trident: Pearl is able to summon a pearl-tipped spear from her gemstone. She is able to fire energy projectiles from the tip of her spear, and she is skilled enough to dual-wield it. It was later upgraded by Bismuth to be a Trident.
Gem Physiology: Gem bodies are fragile, and after sustaining enough damage they will disappear, leaving their gemstones vulnerable as they are forced to regenerate. Gems cannot regenerate if their gemstones are bubbled or contained in another object.
Gemstones: If a Gem's stones are cracked, it leads to them becoming corrupted beasts, making them less intelligent and more feral. If a Gem's stone is shattered completely, then the completely cease to exist.
Emotional Stability: Ever since Rose's departure, Pearl has been somewhat of an emotional wreck. Certain topics about Rose or her past can trigger her into emotional outbursts. She is also seen to desire a feeling of affection (as she tricked Garnet into fusing with her in Cry for Help), and also suffers from self esteem issues, sometimes claiming that she's "just a Pearl".