How to tell real pearls from fake ones – how to avoid buying imitations?

Due to their rarity and high value, pearls have been a coveted gem among rulers and individuals of the highest material status for thousands of years. Only a select few could afford such fine jewelry.

Thanks to pearl farming initiated on a large scale in the 20th century, their prices dropped significantly, which eventually led to cultured pearls replacing naturally harvested wild pearls on the market.

However, it is worth noting that high-quality, near-spherical pearls remain very expensive. It is no surprise, then, that artificial counterparts imitating real pearls exist in the marketplace.

There would be nothing wrong with this if fakes were properly labeled and buyers of "artificial beads" were fully informed. According to international standards, all imitations of genuine pearls should include the word "imitation" in their name.

Selling imitations without clear labeling is unacceptable—yet, unfortunately, it remains a common practice among sellers. Typically, imitations are described as "… pearl" (inserting any trade name, company name, or origin in place of the dots), such as the well-known "Majorca pearl".

Unfortunately, the world is not ideal, and many sellers may intentionally mislead an inexperienced customer. It is essential to know how to protect yourself against unreliable merchants and gain some knowledge about these magnificent gems. In this article, we outline what to look for in order to distinguish real pearls from artificial imitations.

Despite increasingly effective counterfeiting techniques, there are several basic methods that allow anyone to check whether they are dealing with a fake or a genuine creation of nature.

First, however, it is helpful to understand what affects pearl value so that you can spot red flags based on price alone. You can read more about this in our other article – see here.

Weight and temperature of pearls

The first thing to pay attention to is weight. Genuine pearls are quite heavy, with a weight density similar to glass or marble. Imagine holding glass marbles in your hand—that is roughly how heavy genuine pearls should feel.

Furthermore, real pearls are cool to the touch. When you pick up a pearl necklace, you should feel a distinct chill. Only after holding them for several seconds will they warm up to your body temperature.

With most fake pearls, you will not observe this effect. Fakes tend to feel warm immediately (like holding plastic).

Shape of pearls

Real pearls are almost never perfectly round. In freshwater pearls, perfect roundness is practically impossible. Saltwater pearls are usually rounder, but still imperfect.

Even if a pearl appears to be a sphere, precise measurements will likely reveal minor deviations. It is best to use a caliper for this measurement. Differences can be as tiny as 0.1 mm, so precision is key.

Keep in mind that pearls (especially in a necklace) with near-perfect roundness will be very expensive—ranging from around a thousand for smaller sizes to amounts running into many thousands.

Overview of various pearl shapes—from left: baroque, oval, button, round

Measuring an unstrung pearl (for instance, in earrings) is easiest, but you can also measure pearls in a necklace or bracelet. Even according to International Confederation of Jewelry standards, round pearls are allowed a small percentage of tolerance.

De facto, the less perfectly uniform the pearls are, the higher the chance that they are real—especially if you are not buying pearls priced like a new car.

Surface quality of pearls

Flawless pearls do exist, but they command a premium price. Typically, such pristine pearls are reserved for fine gold jewelry settings, such as rings, pendants, or earrings.

You will rarely encounter completely flawless pearls in full strands or bracelets unless you pay a substantial sum. Even in a high-value necklace, individual pearls will exhibit minor natural blemishes.

Imitations usually feature a completely smooth surface without any tiny pits, scratches, or color variations. If your pearls display slight natural imperfections, they are most likely genuine.

Color of pearls

As with surface quality, pearl color is rarely completely uniform. This is easiest to notice in dark pearls, which display a wide spectrum of secondary colors (known as overtones). As you tilt a genuine pearl, its color will subtly or noticeably shift. On white pearls, you will typically observe delicate pink, yellow, or blue overtones. On dark pearls, green, purple, or peacock tones predominate.

Every pearl on a strand will have a similar tone, but never identical. One will always be slightly lighter or have a slightly different color saturation. Pearls in your necklace will not be 100% identical in shade, though matching them closely requires meticulous sorting—which, as always, comes at a higher price.

Pearl matching

A key indicator of quality in fine pearl jewelry is how well the pearls are matched in size, shape, body color, and surface quality.

In high-grade earrings, it can be difficult to spot differences between two matched pearls. However, in a necklace or bracelet, slight variations are visible upon close inspection. Conversely, artificial pearl sets are usually completely identical.

Remember that even with high-end pearl jewelry, close inspection will reveal subtle natural differences between pearls.

Be sure to read these messages from customers who have already trusted us :)

Luster

Luster alone is not always easy to evaluate when distinguishing genuine pearls from imitations. Many fake pearls are crafted specifically to mimic sheen, but their shine remains "shallow".

In real pearls, luster originates from within. This occurs because pearls are composed of microscopic layers of nacre laid down over time. Since these layers are semi-translucent, light reflects from deeper layers, creating a distinct sense of depth and glow.

Variations in genuine pearl luster

Evaluating luster accurately requires experience and comparative samples, so it is best not to rely solely on this feature—especially since high-end counterfeits also feature layered coatings.

The friction test

A practical method that helps filter out most imitations: real pearls have a slightly gritty surface texture. You won't feel this when simply holding them, as they feel smooth to the touch.

However, gently rubbing two pearls against each other will reveal slight friction. Do not hesitate to apply a small amount of pressure, as gentle touching won't produce the effect.

After rubbing them, inspect the contact spot. You will see a tiny amount of fine white powder (even on dark pearls). Did you just damage your pearls?! Don't worry—simply wiping the area with your thumb will restore the surface completely. Avoid excessive force, however, to prevent scratching.

On the left: fine pearl powder after rubbing pearls together

In contrast, most imitations will feel slick and slide smoothly against one another without resistance.

If you only have a single loose pearl, you can gently rub it against the edge of your front tooth. You should feel a slightly gritty texture. Perform this test gently to avoid leaving a deep mark.

Pearl bounce test

All genuine pearls, whether natural or cultured, exhibit elasticity. When dropped from hand height onto a smooth glass surface, a loose pearl will bounce up to approximately half its drop height (plastic imitations bounce significantly higher, while glass imitations bounce lower).

A similar reaction occurs on smooth ceramic tiles. However, this test is only practical for unstrung loose pearls, which are rarely available in retail settings.

We certainly don't recommend dropping whole necklaces onto store display cases ;)

The boiling water test

Some imitations deform or lose their surface sheen when exposed to hot water. Genuine pearls remain unaffected, even if left in boiling water for a short duration.

Jewelry craftsmanship and finish

Pearls are valuable gems, and fine jewelry construction reflects that value. Authentic pearl jewelry is predominantly crafted with solid silver or gold mountings. If you encounter flawless pearls paired with a base metal clasp, exercise caution.

Low-grade findings rarely match high-grade pearls, unless the strand is an unfinished temporary bundle intended for custom restringing.

For necklaces and bracelets, check whether the strand is hand-knotted. Knots between each pearl serve two purposes: preventing pearls from rubbing against each other and protecting them from scattering if the strand breaks. Counterfeits rarely feature hand-knotting due to the labor involved.

Common pearl imitations

Numerous synthetic imitations made from various materials exist on the market. Among the most widely recognized imitations are:

Majorica (Mallorca) – widely distributed imitations that are frequently mistaken for real pearls. Because they are a branded regional product, they sometimes come with certificates, further confusing buyers. They are manufactured manually using glass or porcelain cores coated with multiple synthetic layers consisting of fish scale essence (essence d'orient) and lacquers. They feature a remarkably uniform shape and high shine.

Fun fact: even Majorica imitations have inspired knockoffs of their own!

Shell pearls (Seashell pearls) – artificially shaped spheres made from mother-of-pearl shell cores or powdered shell composite. Their hallmark features are perfect roundness, a smooth surface, and a low price point.

Swarovski Pearl Elements – imitations built on a crystal glass core with a synthetic pearl coating. Available in dozens of uniform colors, making them easy to identify by their exact color consistency.

On the left: imitation pearl; on the right: genuine pearls

Summary

Equipped with this knowledge, you can approach your purchase with greater confidence and spot imitations more easily. If you are purchasing high-value pearls and have doubts, consult an independent gemologist or a trusted specialist jeweler—and buy from dedicated pearl specialists.

Answer to the image quiz

P.S. Wondering which pearl from the first picture is genuine? On the left is an imitation (Shell pearl), and on the right is a real pearl :)

Did we mention you can get a discount? See how without time limits or minimum order sizes :)