The earrings are made of sterling silver (.925 silver). This is the first grade silver and remains very nice.
Because of its shape and the pearl is unfathomable shine in many cultures as a symbol of eternity, beauty of spirit, wisdom and immortality. They are located at the inside of shells in response to a piece of sand that enters the shell. The mollusk then put a layer of calcium carbonate on the grain of sand off, in the form of minerals. The layers by a horny substance cemented together. It is estimated that 1 in 15,000 wild oysters is a pearl. Therefore, nowadays almost all cultured pearls. For this in the oyster a small grain of pearl and placed the pearl can be harvested after two years.