Carnelian chips 4-6mm. These beads are great for multiple strand long necklace plain or with accent using other types of materials including metal beads or spacers. . This August birthstone is a variety of quartz in reddish to brownish orange in color. It is moderately translucent and often found in jewelry in antique stores. It is fairly an inexpensive stone, but carnelian puts some warmth and beauty to any jewelry.