Learn about pearls and how it has been formed

Pearl Education

Every women should have pearl jewelry among her jewelry collection. Pearl quality is dependent on its source, how it was formed and other quality factors. Our guide gives you pearl information to help start your search.

Pearl Jewelry

How to Differentiate Real Vs Fake

Real pearls are examples of nature’s beautiful magic. They are formed when a mollusk (oyster, clam, mussel) has an irritant enter its shell; in defense, the mollusk produces layers of fluid (known as nacre, pronounced NAY-kur) around the irritant. The process takes between 5-10 years, and they result is the beautiful luminous beads we cherish as pearls. Let’s review the three types of pearls you may consider when shopping for pearl jewelry: natural, cultured and imitation.

Natural Pearls

Natural pearls, those that form organically in nature, are extremely rare — very few are on the market today. The best source for natural pearls was the Persian Gulf, but when oil was discovered around the 1930s the Gulf waters could no longer produce pearls. Today, traditional fishing for natural pearls is still practiced in India — but the pearls harvested are often small and expensive.

Cultured Pearls

Cultured pearls make up the majority of pearls on the market today. The “culturing” process dates back to the late 19th century, cultured pearls are formed in the same way as natural pearls, and are considered real pearls. In cultured pearls, an irritant is surgically placed into the mollusk and protected in “pearl farms” while the pearl develops.While man can start the pearl process, it is still up to nature to determine the quality of the final pearl. Of the pearls created after a five-to-ten year farming cycle, only 5% are of the high quality required for fine jewelry, according to the Cultured Pearl Association of America

Imitation Pearls

Imitation pearls are the third type and have no connection to the natural pearl making process. They are made from glass beads that are dipped into a solution made from fish scales. While most have a high luster, it may eventually fade.One way you can test a pearl as imitation is to rub it against another pearl; imitation pearls glide across each other but cultured pearls feel gritty because of the layers of nacre. Many cultured pearls undergo treatments to enhance their luster or alter their color. This does not make them any less real. A professional jeweler is trained to understand and explain these treatments, especially because they can affect the pearl jewelry’s value.  

Quick summary of pearl quality factors

Pearl Quality Factors

Pearls are classified by origin, then graded by size, shape, nacre thickness, color, luster, surface clarity and how they match. Here’s a quick summary of pearl quality factors to get started:


Measured by their diameter in millimeters, the average cultured pearls sold today are between 7 and 7 1/2 millimeters. Generally, the larger the pearl, the more valuable it will be.


The combination of surface brilliance and a deep-seated glow, the luster of a good-quality cultured pearl should be bright, not dull. Your reflection should be seen clearly on the surface of a cultured pearl. Any pearl that looks too chalky or dull indicates low quality.


Since cultured pearls are grown by oysters and subject to the whims of Mother Nature it is very rare to find a perfectly round cultured pearl – and these are considered most valuable. While many people prefer the perfect spheres of classic pearl jewelry, baroque pearls — those that have an irregular shape — are now commonly seen in fine jewelry.Freshwater pearls, from fresh water sources like lakes and rivers, are most often baroque.


Cleanliness of the cultured pearl surface refers to the absence of disfiguring spots, bumps or cracks. A cultured pearl with a clean surface will have a higher value than a spotted, bumpy or cracked one.

Quality Pearl Strands

Pearls should not bunch or twist Knots should be shaped uniformly and pushed snugly against both sides of every pearl Silk cord should match the pearl color as closely as possible

How to Clean & Store Pearls

Apply cosmetics, hair sprays and perfume before putting on any pearl jewelry. When you remove the jewelry, wipe it carefully with a soft cloth to remove any traces of these substances.

You can also wash your pearl jewelry with mild soap and water. Do not clean cultured pearls with any chemicals, abrasives or solvents. These substances can damage your pearls.

Always lay cultured pearl strands flat to dry.  Hanging a strand may stretch the threads. Do not toss your cultured pearl jewelry carelessly into a purse, bag or jewel box. A pearl’s surface is soft and can be scratched by hard metal edges or by the harder gemstones of other jewelry pieces.Place cultured pearls in a chamois bag or wrap them in tissue when putting them away.

Cosmetics, perspiration, oils and ordinary wear weaken and stretch the threads on which the pearls are strung. Bring your pearls back to your jeweler for restringing once a year. Make certain the pearls are strung with a knot between each pearl. This will prevent loss of pearls if the string should break.