Diamond is rendered with crystalline facets that catch light from every angle, creating a cool, prismlike shimmer across the figure. The sculpt captures the figure’s slender yet solid silhouette, with sharp edges that echo the gem’s innate hardness. The color scheme blends translucent icy blues, frosted whites, and subtle metallic accents that resemble polished facets reflecting a moonlit surface. Fine detailing on the torso and limbs emphasizes the jointed elegance of a living gemstone, while the eyes are painted with a calm, piercing gaze. The stand or base is minimal, designed to showcase the character without overpowering the crystalline finish. Overall, the piece conveys Diamond’s serene discipline and mineral beauty.

Diamond is one of the sentient gems living on the lunar side of the world in Houseki no Kuni. They embody a disciplined, rational mind and serve as a stabilizing presence among the diverse cast. Throughout the story, Diamond contemplates duty, fate, and the meaning of being a gem in a perilous, ever-changing environment. They often respond to crises with careful strategy, support other characters through tough decisions, and face moments of vulnerability when the surface of their resolve cracks under pressure. Diamond’s evolving relationships reveal themes of friendship, identity, and the price of strength, elevating both the narrative and emotional stakes of the series.