Houseki no Kuni, also known as Land of the Lustrous, is a visually stunning anime series that explores the lives of sentient gemstones who defend their world from mysterious moon-dwelling creatures. The series is renowned for its unique art style and deep philosophical themes, focusing on identity, purpose, and transformation. It follows the journey of Phos, a young gem, as they strive to become a valued warrior while uncovering the secrets of their world.