Rare purple doublesided shell necklace bordered w 18k gold.and small highlight

Purple Mermaid shell necklace rimmed in 18k gold. Has gold decoration it the top and lovely small highlighted area. Some reflection from phoneshot. Brings good luck to the wearer. Named after the Hindu God, Shiva, the shell represents the Third Eye found in many depictions of the God. Folklore suggests Shiva Eye Shells are “Mermaids' Money” and good luck to travelers and fishermen. BH