Pearls are hard and have smooth surface as they are made from calcium carbonate.
Pearls come in various shapes and colors.
They are usually white with a creamy or pinkish tinge.
Black Tahitian pearls are among rare ones.
There are natural pearls like – basara and Venezuela, Cultured pearls like-tahitian , akoya, south sea and freshwater.
Pearl necklaces were a treasure in fact the most expensive jewelry in nobel times.
Larger pearls with unusual shape are popular with creative jewelry designers.