Everything You Need to Know About Mermaid Jewelry Mermaid jewelry made out of 925 sterling silver and studded with semi-precious gemstones has become quite popular nowadays. In most E-commerce stores, you can find a wide array of designs within Mermaid Jewelry, and once you wear a particular design, you will start experiencing a mysterious connection to the oceans. Below is a brief description of the three most common mermaid jewelry – mermaid rings, mermaid earrings, and mermaid pendants.