Carnelian Agate Chip Necklace. Single Strand measures 34" long. Carnelian Agate is the name given to a translucent variety of chalcedony that is orange, red or reddish brown in color.  The warm, vibrant color of this piece is what gives it its charm. Perfect piece of jewelry for any season, especially Fall and Autumn, or around Halloween and Thanksgiving, when you ask yourself "What can I wear today???"