Half breeds and a Human
This is a luck stone, it grants its owner a +1 to all saving throws, ability and skill checks.
This item can also be used in crafting, it has a magic level of 12
Some dragons, at a young age take to eating stones thinking it will help them be strong and powerful. While it does not help them, these stones can stay with a dragon for its entire life only to be found among its remains, a small portion of its power and magic having leeched into the once common rock.