Onyx is a unisex English given name derived directly from the word for the gemstone, a banded variety of chalcedony known for its striking black, red, or other colors. The name ultimately comes from the Ancient Greek ὄνυξ (onyx), meaning "claw" or "fingernail," reflecting the resemblance of some pink-and-white banded onyx to a human nail. Cognate with the English word nail, the term entered Latin before being adopted into English as the gemstone name. Etymology and Gemstone Background Onyx is a silicate mineral and a type of agate, typically characterized by parallel bands of black, white, or red. While commonly used to describe any level-banded agate, technically onyx refers to a specific color pattern rather than band structure. Reddish-brown banded varieties are known as sardonyx. The stone has been used for jewelry and cameos since antiquity, prized for its layered colors that allow intricate carving. Despite modern misapplications to materials like "Mexican onyx" (banded calcite) or "cave onyx" (flowstone), true onyx remains a popular gemstone. Cultural Significance and Modern Usage As a given name, Oz has been adopted primarily in English-speaking countries, particularly in the 21st century, as part of a trend toward precious-stone and nature-inspired names. Its rarity and strong, concise sound give it a modern, minimalist appeal. The name may be chosen for its association with strength, mystery, or the enduring beauty of the stone. Notable bearers are limited, but the name appears occasionally in popular culture, giving it a subtle yet distinctive presence. Meaning: Gemstone; derived from Greek "claw" or "fingernail" Origin: Greek via Latin, adapted into English as a word name Type: Unisex Usage Regions: Primarily English-speaking countries