Bort (ボルツ, Borutsu) is one of the Gems who mainly does patrol duty. They are a diamond-class Gem whose hardness and toughness is top level. Because their body has tiny crystallization instead of large, the hits they receive are dampened and won't spread to the rest of their body, unlike Diamond. They are a calm yet ruthless warrior and battle maniac. They excel at battles and are very combat-oriented, to the point that when Phosphophyllite becomes stronger, Bort tries to cut their alloy to see what it does. Bort is also an efficient and analytic fighter, often pointing out the flaws in the other Gems in a harsh and straightforward manner. This causes them to be seen as cold and scary to the other Gems, but also causes Bort to be respected and looked up to as a reliable Gem. Whenever Bort engages the Moon People, the other Gems become instantly relieved. Despite their harsh personality, Bort does have a softer side, in rare moments displaying a sense of humor and a reluctance to hit cute things. They have also shown care and concern for their siblings, or at the least does a good job looking out for all of them. Bort hardness is 10
Land of the Lustrous
In the mysterious future, crystalline organisms called Gems inhabit a world that has been destroyed by six meteors. Each Gem is assigned a role in order to fight against the Lunarians, a species who attacks them in order to shatter their bodies and use them as decorations. Phosphophyllite, also known as Phos, is a young and fragile Gem who dreams of helping their friends in the war effort. Instead, they are told to compile an encyclopedia because of their delicate condition. After begrudgingly embarking on this task, Phos meets Cinnabar, an intelligent gem who has been relegated to patrolling the isolated island at night because of the corrosive poison their body creates. After seeing how unhappy Cinnabar is, Phos decides to find a role that both of the rejected Gems can enjoy. Houseki no Kuni follows Phos' efforts to be useful and protect their fellow Gems.
