A defining characteristic found on the hide of stingrays is a calcified cartilage structure. This structure, often located centrally on the animal’s back, presents as a cluster of small, closely packed nodules resembling beads or pearls. This distinctive feature is a key element in identifying and appreciating this unique leather material.
The presence of this unique ‘pearl’ formation enhances the aesthetic appeal of the material, increasing its value and desirability in various applications. Historically, this feature has been considered a mark of quality, distinguishing genuine stingray hides from imitations and playing a role in the material’s cultural significance in various societies. The pearl offered robust protection to the animal.