This carnelian stone gets its warm orange-to-red color from iron oxide impurities trapped in the chalcedony as it formed, the same coloring mechanism behind many red and orange minerals, but carnelian carries it with a distinctive glow-like translucency that few other stones manage.
As a carnelian crystal, it's been cut and worn since antiquity, ancient Egyptian and Roman signet rings frequently used it specifically because it was believed not to stick to hot sealing wax.
It's commonly found alongside, and sometimes confused with, a related material, jasper and carnelian are both chalcedony varieties colored by iron, but jasper tends toward a more opaque, matte finish while carnelian keeps a warmer glow and slight translucency when held to light.
The deepest, most prized red carnelian gets its intensity from a higher concentration of iron oxide, sometimes enhanced through gentle heat treatment, a practice used since ancient times to deepen naturally lighter orange material into the richer red collectors favor.
Raw carnelian typically shows a duller, waxier surface before cutting, it's the polishing process that brings out the glassy shine and color depth you see in a finished cabochon.
Each piece in this lot is cut mix shape with a flat back, priced in small counts, giving designers a reliable, classic stone that works in nearly any warm-toned jewelry design.