1. a translucent or opaque microcrystalline variety of quartz, typically pale blue, gray, or white, used in jewelry and decorative objects
Usage: commonly used in gemstone and mineral contexts

Examples

• The necklace featured a beautiful chalcedony pendant in soft blue.
• Chalcedony has been valued as a gemstone for thousands of years.
• The ring was set with a polished chalcedony stone.
• Collectors often seek out high-quality chalcedony specimens for their collections.
• The chalcedony's milky appearance made it popular in ancient jewelry.