Shiva Shells | Tumbled

Shiva shells are the calcified opercula of marine gastropods, primarily from the Turbinidae family, composed mainly of calcium carbonate (CaCO₃) in the form of aragonite. They develop as a protective covering for the snail’s opening, with their characteristic spiral structure resulting from incremental growth influenced by movement patterns and mineral deposition. With a Mohs hardness of approximately 3-4, they are relatively soft compared to other biominerals. Found in coastal and shallow marine environments, they are commonly collected in regions such as India, Thailand, Australia, Sri Lanka, and the Philippines. These structures naturally accumulate in marine sediments or wash up on beaches, making them an accessible subject for biomineralization studies.

Localities: India, Thailand, Australia, Sri Lanka, and the Philippines

Rarity: Modertate

Hardness: 3 - 4

*Price is per individual piece unless noted. Due to the natural variations of each piece, please note that the actual item you receive may not appear exactly as pictured. Rest assured, however, that our dedicated team will do their best to hand-select the most attractive specimen(s) that we have in stock at the time of your order. Sizes and weights are always approximate.