Pearls are classically elegant and never go out of style. Due to the rarity of naturally occurring pearls, a process of cultivating pearls was introduced in the early 1900s. In this process, a small piece of tissue or a small bead of polished shell is inserted into an oyster or mollusk to act as an irritant and produce a pearl. This process can take up to 24 months. These pearls are referred to as cultured pearls.
These saltwater pearls were the first type of pearl to be cultured. Japan and China are the main producers of these pearls. They are consistently round, which makes them perfect for strands. Colors generally range from white to cream.
The freshwater pearl is usually slightly less round and possesses less luster than saltwater pearls. These pearls are usually cultivated in China and provide a value-priced option.
These pearls are cultured in the northern waters of Australia, Indonesia, and the Philippines. These pearls are considerably larger than Akoya pearls and much more sensitive during the cultivation process. South Sea pearls are naturally white, cream, or golden in color.
These pearls are slightly smaller than the South Sea pearl, but are also sensitive during the cultivation process. The colors of black, silver, and gray occur naturally and they are cultured in Tahiti as their name implies.
Pearls are available in a variety of colors, as noted above. The most common are white, cream, yellow, pink, gray and black. Most pearls will have both a primary color, the first color you will notice, and a secondary color, the overtone you notice when you take a closer look. Color variation does not decrease the value of the pearl, but is important when matching pearls to be used in strands, earrings, bracelets, etc.
A pearl's luster is the result of multiple layers, also called the nacre (NAY ker), that the oyster or mollusk secreted to make the pearl. The thicker the nacre, the more luster a pearl has. You will notice the luster as the deep sheen that reflects light on the surface of the pearl. The higher the luster the sharper the reflection and refraction of light. This is the most important characteristic both for value appraisal and for visual appeal.
Pearls come in a variety of different shapes. The most coveted of these is round. Akoya, Tahitian, and South Sea pearls are most often the roundest of the pearls. Other shapes can make beautiful jewelry as well, sometimes providing you with different price options.
Due to the fact that pearls rely on an uncontrollable environment in which to grow, very rarely will you find a perfect pearl. The surface of a pearl may not always be smooth, often including natural blemishes. The beauty of these pearls may be enhanced by the ability for these blemishes to sometimes be camouflaged during the stringing and setting process.
The size of a pearl is measured by its diameter in millimeters. The size of the oyster or mollusk that a pearl is produced within will have a direct effect on the size of the pearl. The size alone may not greatly impact the price of a pearl, but when you combine it with a perfectly round shape and beautiful luster, the value will dramatically increase.
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