VINTAGE ANTIQUE JEWELRY

Identifying Cultured Pearls from Natural Pearls    by Brock Austin

A general confusion, in identifying Natural Pearls, even among experts has endured for all of the approximate 100 years since the introduction of Cultured Pearls. Many jewelry customers, worldwide have hardly any acquaintance with Pearls. They have never developed 'an eye for a pearl' as most have never owned any. The scientific way to identify natural true Pearls from Cultured is by X-ray examination.

Pearl Jewelry is acquired mainly from estates and many Natural Pearls, singly or in necklaces remain in private hands.

Embellished with enamels, rubies, diamonds, a single sapphire, and pearls, lots of them, all pearls, adorns the crown of Emperor Rudolf II, that dates to circa 1602!
The Imperial Scepter of Austria made by the court goldsmith Andreas Senbruck in 1612 also echoes the decorative design of the crown and is embellished with natural pearls and a single blue sapphire.

The Thickness of the Nacre is the Key in Identifying Natural Pearls.

A simple method in identifying Natural Pearls is by checking the thickness of the nacre layers.

You can do this by rolling a strand of pearls on a white surface under a strong light. Thin skinned Pearls will wink at you. They will appear brighter and darker as the Pearl is rotated. The winking is the bead showing through the nacre. Winking Pearls will not be not Natural Pearls.

Candling is another way of identifying Natural Pearls. The Pearl is held over a concentrated light source or placed on the lens of a flashlight. A maglight is perfect for doing this test. In thick skinned Pearls the bead will appear as a dark round smudge. A series of parallel stripes will be present in thin skinned.These stripes are growth layers. Pearls with these striations have very thin nacre and will therefore not be Natural Pearls.When you do the same to a Cultured Pearl, you will see a thin brown line between the nacre layer and the nucleus of the Pearl.

Another way to help in identifying Natural Pearls is by examining the Setting. If you see a Picasso in someone's home, you can be pretty sure it isn't the original piece of artwork. Similarly, you can gain valuable clues about a Pearl's authenticity by looking at its surroundings.

pearls will have settings of gold, silver, or platinum. The setting will of course pre-date the 1920's. The setting rule is not a rule set in stone; many high quality Cultured Pearl necklaces will have high quality settings. Even so, the setting and the age of the jewelry will provide clues to help you reach a conclusion.

If still in doubt, instruments used for testing is the pearl microscope (pearlometer) but the most efficient tests are by means of the endoscope or a modern X-ray test called a SKIAGRAM or for undrilled Pearls, the lauegram.

It is important to note however, that sometimes identifying Natural Pearls from cultured Freshwater Pearls is nearly impossible. You can't tell the difference even by X-raying these Pearls. The nucleus, whether inseminated or naturally occurring will decompose and usually leave a small void inside the pearl. The tiny little void will be the only piece of evidence that remains.

by Evie Hammouda-Eyre of Antique Jewelry Investor. Antique Jewelry Investor is the first resource center on the internet dedicated to providing free information on how to invest safely in Antique Jewelry. For more info on this topic. See

About the Author

For latest collections of Pearls and Pearl Necklaces and Pearl Jewelry visit lagunapearl site.
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