The phone cases shown are primarily geometric diamond or marble pattern plated covers, often marketed as "Fashion Case".
Key Features
Design: Distinctive geometric diamond-cut or marble-pattern finish with 3D-like effects.
Material: Usually constructed from flexible TPU or polycarbonate, providing a "clicky" feel for side buttons.
Protection: Designed with a raised, electroplated frame to protect the camera lenses and provide impact resistance.
Compatibility: These cases are available for a wide variety of models, including the Samsung S24 Ultra (as indicated by the "SAM S24U" sticker in your image), Samsung Galaxy A16, and various iPhone and Android models