Each tumbled and polished gemstone is approximately 12-25mm.   Listing is for 1 tumble.
 
Carnelian properties include:
Helps you make the best life choices
Boosts fertility & sexuality
Stimulates creativity, good for live performers
Banishes emotional negativity & anger
Brings the ability to finish projects, sharpens your concentration
 
Chakra: Solar Plexus, Sacral, Root
Zodiac: Aries, Taurus, Cancer, Leo, Virgo
Element: Fire
Planet: Mars, Sun