Black pearls are totally charismatic due to their appearance and therefore draw more and more attention. But complete black pearls are a rare find and generally the available pearls are usually a combination of dark colors including glistening emerald green, sea green, purple and brown. Black pearl necklaces are more expensive compared to white pearl necklaces because of the fact that they are rare.

When considering buying a lack pearl necklace, there is number of key factors which when combined will determine overall value of your purchase. These factors include:

Luster: of the black pearl is a crucial measure of quality.

Size: is another key factor to look for. Generally the size of pearl range from 8 mm to up to 14 mm. Black pearls are larger than white pearls.

Surface: of a natural pearl will clearly have some minor imperfections on the body. These tiny marks are a key feature in validating a true black pearl from a man-made synthetic.

Color: of the pearl necklace should compliment the skin tone of the wearer.

Orient: is defined as the way in which the light penetrates the pearl and surges around the spherical orientation of the stone.

Shape: of a black pearl differ and includes spherical, pear and sometimes heart shape. Depending on their shape, the black pearls are used in different types of jewelry and the black pearl necklace is one of them. The most difficult shape for a black oyster to create is a perfectly spherical gem, which is why a perfectly spherical pearl is considerably more expensive than any of the other shapes.