Eggshell is the outer covering of a hard-shelled egg and of some forms of eggs with soft outer coats. Bird eggshells contain calcium carbonate and dissolve in various acids, including the vinegar used in cooking. While dissolving, the calcium carbonate in an eggshell reacts with the acid to form carbon dioxide.
Don't waste your eggshell, now you can create into a decorative painting or an accessories you can put into your wall and any other creativities.
Here are 5 masterpieces of decorative eggsehell :
Arabic painting :