Shiva's Eye or Cat's Eye Operculum
Turbo cf. marmoratus or Turbo petholatus • Body fossil (calcified operculum of a marine gastropod, commonly sold commercially as a fossil or semi-precious shell item, though many modern specimens are recent rather than true prehistoric fossils)
Geological Period
Neogene to Quaternary (or Recent/Modern)
Estimated Age
0 to 5 million years (often found as sub-fossils or recent beach finds)
Preservation Type
Original aragonite/calcite mineralization, highly polished or naturally smooth operculum
Condition Assessment
Good condition, well-preserved structural integrity with smooth polished surface and clear spiral marking
Taxonomic Classification
Phylum: Mollusca, Class: Gastropoda, Order: Littorinimorpha, Family: Turbinidae, Genus: Turbo
Morphological Description
Small, flattened to convex calcareous disc with a smooth, polished exterior surface showing a distinctive spiral growth pattern resembling an eye shape, featuring a dark central whorl tapering into lighter outer calcium carbonate layers.
Rock Matrix
None (unembedded specimen, likely cleaned or polished for decorative or talismanic purposes)
Formation & Location
Indo-Pacific marine environments, commonly collected from tropical beaches and shallow reefs
Size & Dimensions
Approximately 1.5 cm to 2 cm in diameter, consistent with medium-sized turban snails
Value & Rarity
Estimated Market Value
$5 - $15
Auction Estimate
$10 - $25
Rarity Assessment
Common
Scientific Significance
Demonstrates the durable mineralized structure of gastropod opercula used for protection against predators, providing insights into modern and ancient marine mollusk anatomy
Preparation Recommendations
No special preparation needed; keep dry and clean with a soft cloth. Store in standard ambient display conditions.
Notable Features
The striking natural spiral pattern resembling an eye, making it popular both as a biological specimen and in jewelry or metaphysical markets under the name Shiva's Eye.