Their color can sometimes signify underlying conditions. The presence of a half moon is a symbol of healthy nails and body But it could point to more serious issues
Half Moon On Thumb - Indian Palmistry Blog : indianpalmistry
Learn why your lunula might be missing.
This appearance may be less visible in people with certain conditions.
It is a part of the nail matrix, which is the tissue beneath the nail The lunula produces the cells that will become your nails once hardened A healthy lunula is whitish or pale in colour and is usually most visible on the thumb