Revelation 1:11

Σάρδεις (Sardis) is a plural form used for the ancient city, while "σάρδης" (sardēs) refers to a type of stone, specifically carnelian. The connection between the city name and the stone suggests that the name of the city could be related to the local significance of carnelian or to the city's trade in gemstones. The term "σάρδης" highlights the city's association with the gemstone industry in antiquity.