Mermaid with diamond. Sterling silver with 24 karat gold. Mermaid symbolism is multifaceted, representing femininity, sensuality, transformation, and the unknown, often embodying both the allure and destructive power of the ocean and the subconscious. In a spiritual context, diamonds are often seen as symbols of strength, clarity, purity, and divine forces, believed to enhance enlightenment and provide protection from unwanted energies.