T-Shirt Tシャツ

A bright blue diamond is illustrated in a cute, expressive cartoon style, floating against a deep black background. Faceted geometric lines reflect light in crisp angles, while tiny star-like sparkles shimmer across the surface. Big glossy eyes and soft pink blush give the gem a friendly, kawaii personality, blending luxury shine with playful charm. Clean outlines and radiant highlights make the image feel magical, polished, and delightfully modern.