Carnelian was the stone of courage to the Romans, for the Egyptians it assisted the dead in their afterlife journey and in the Middle Ages was used to release energy of other stones.
Semiprecious Stones
Natural stones that generally have a lower value than precious stones, including amethyst, aventurine, carnelian, garnet, opal, rose quartz and others.
Chalcedony
Various types of colored quartz, usually with a milky appearance, including carnelian, agate, cat's eye and jasper.