Rare - Bicolor Pen Shell Naturally Colonized by Pink Spiny Oysters Stunning marine life on an antique-style stand with a glass dome. - Height: 700 mm - Width: 190 mm- 2900 g - (1)

Natural Marine Assemblage: Giant Pinna bicolor with Spondylus — This extraordinary natural history composition presents a monumental valve of Pinna bicolor, the largest bivalve in the Mediterranean, transformed by time and the sea into a substrate for a vibrant colony of Spondylus. The specimen, carefully mounted on an elegant antique-style base and protected by a glass dome, evokes the aesthetics of Wunderkammer, the ancient cabinets of curiosity where science and art merged into a single narrative. The central element is the large shell of Pinna, whose slender, almost architectural shape rises to a considerable height. Its surface, traversed by delicate growth lines, tells the story of its life. The colors vary from brown-purple to lighter tones, with areas where natural erosion reveals the underlying mother-of-pearl layer, creating subtle plays of light. The fan shape, elegant and imposing, makes it a true sculpture created by nature. On the surface of the Pinna, a family of Spondylus spp. has found a home, creating a fascinating material and color contrast. These bivalves, known as "spiny oysters", are distinguished by their valves ornate with delicate lamellae and spines, here preserved with remarkable integrity. Their colors, ranging from deep pink to cream white, stand out against the darker background of the host shell, generating a three-dimensional effect of great visual impact. The entire composition is a document of the epibiotic phenomenon, a biological interaction in which one organism grows on another, here crystallized in a specimen of exceptional aesthetic value. This is not an artificial creation, but an authentic fragment of a marine ecosystem. The calcareous encrustations, traces of marine organisms and the small irregularities of the surface are not defects, but authentic testimonies of its biological history. The specimen has been carefully cleaned to enhance its beauty, while preserving the integrity of its natural formation. The museum installation, with the black metal support gently embracing the shell and the turned wooden base with bronze feet, completes its presentation, turning it into a high-value collection object. Placed in a study, on a bookshelf or in a design-oriented environment, this piece becomes a catalyst of curiosity and admiration. It represents a dialogue between the sculptural perfection of nature and the elegance of human display, combining the fascination of malacology with the refinement of an art object. It is an invitation to contemplate the complexity and beauty of marine life forms, a conversation piece that enriches any natural history collection or prestigious interior. Technical details Name: Natural composition of Pinna bicolor and Spondylus spp. Classification: Mollusca, Bivalvia Provenance: Italy, Mediterranean Sea Overall dimensions: 700 x 190 x 190 mm (including base and dome) Total weight: 2900 g (including base and dome) Setup: Specimen mounted on metal stand, wooden and bronze base, glass dome. Conditions: The specimen is natural. Irregularities, erosion, and small missing parts are authentic features of its marine origin and should not be considered defects.