Of all the pearls around the world, one is revered above all others: the South Sea Pearl. Grown in the deep seas off Australia's coast, the South Sea pearl is prized for its brilliant gold or white shine. Shopping for South Sea pearls can be confusing. An informed shopper should gather as much information as possible so as to make an educated decision.
Grading South Sea Pearls
Pearl necklaces are graded by the Five S's: Shine, Surface, Shade, Shape and Size.
Shine (Luster) is the way that light reflects and shines through the pearl. Because a pearl is an organic object, it often has Surface markings such as nicks, scratches, small indentations and discolorations. (A pearl void of such markings is considered perfect and only accounts for 5-10% of the total amount of pearls harvested each year). Pearls have a wide variety when it comes to color and overtone, with different Shades being considered more desirable than others. Pearl Shape can range all the way from Baroque to Perfect-Round, with different shapes being considered more valuable than others due to their rarity. Size is the total circumference of the pearl, usually measured in millimeters. The combination of these qualities factors in to the total grade of the necklace, resulting in a rating of A, A+, AA, AA+ and AAA. The highest grade for a pearl necklace is AAA quality. AAA pearls are the most desirable and valuable. They are impressive gifts to give someone who especially cares about quality and value.
South Sea Pearl Luster
Shine (Luster) is the way that light reflects from the pearl. It is the most important factor in determining a pearl's value. Luster is what gives the pearl its iridescence and depth. Luster is determined by the thickness of pearl nacre, the coating that makes up the pearl. Very lustrous pearls have a deep-mirror like surface and a bright shine. Pearls with low luster look dull and foggy. South Sea pearls are in possession of thick, creamy nacre and are famous for their rich, silky luster.
One way to examine the luster of a pearl necklace is to lay the strand on a table and look at the pearls from 20 inches away. The sharper and clearer your reflection is on the pearls' surface, the higher the luster.
South Sea Pearl Surface
As pearls are an organic creation, they often have surface imperfections. Flawless South Sea pearls are very rare and command a much higher price. The surface of a pearl is graded by how many imperfections are visible and to what percentage they are distributed. These marks can range from small and nearly unnoticeable, to quite large and distinct. When buying pearl jewelry, be sure to examine the pearl surface carefully for these kinds of flaws.
source: ezinearticles.com
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