Large ammonite preserved on its original septaria matrix, displaying strong contrast between the dark shell material and the lighter surrounding stone. The specimen retains clear ribbing and structural detail, with natural fractures characteristic of septarian nodules. Within the exposed cavity, fine crystal growth is visible, adding depth and sparkle to the interior and enhancing the visual impact of the piece. This is a substantial and impressive fossil suitable for collectors seeking a decorative display specimen with both geological and aesthetic appeal.