Are Keshi pearls rare? We explain the factors that determine their appeal and value, and tips for choosing accessories
Posted by GINZAREPEARL

Keshi pearls are rare natural pearls that form by chance within the mother oyster. They are highly valued due to their rarity and unique beauty.
Although small, they emit a strong glow and are popular due to their wide variety of shapes and colors.
In this article, we will take a detailed look at the types of Keshi pearls, their appeal, and how to determine their value.
What you'll learn in this article:
- Characteristics of Keshi pearls and differences between each type
- Five points to consider when determining the rarity and value of Keshi pearls
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How to choose Keshi pearls that will last a lifetime
Learn about the charm of rare Keshi pearls and find the one that's perfect for you. We've put together an easy-to-understand summary for those without any prior knowledge, so please use it as a reference.
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Keshi pearls are rare! Characteristics explained by type
There are three types of Keshi pearls:
- Akoya pearls
- Black pearl
- White South Sea Pearl
Keshi pearls are different from typical cultured pearls in that they are non-nucleated pearls that are born by chance. Therefore, each one has a different shape and size, and has a unique sparkle.
Because there are few of them in circulation on the market and they are highly valued as special jewelry.
Now let's take a closer look at the characteristics of each.
Akoya pearls
Akoya Keshi pearls are characterized by their elegant luster and delicate beauty. Compared to regular Akoya pearls, they have a thicker nacre and give off a deeper shine.
The reason why these rare pearls are born is because they form by chance during the culturing process. Because they are produced without a nucleus, they are smaller than regular Akoya pearls, but the brilliance of the high-purity nacreous layer stands out.
Akoya Keshi, which is found in Ise-Shima, Nagasaki and other areas of Japan, is characterized by its soft milky white and pale pink colors. When it catches the light, it shows seven interference colors, making it popular as an elegant piece of jewelry.
Although small, Akoya Keshi pearls are highly valued as sophisticated jewelry due to their exceptional beauty.
Black pearl
The black pearl Keshi pearl is attractive for its mysterious color and unique shape. It has a deep color not found in other Keshi pearls and has a unique presence.
Regular black pearls tend to be large and round, but since Keshi pearls grow without a seed, each one is unique in shape.
Some have a mixture of black, green, blue, and red, and their appearance changes depending on the angle from which they are viewed. Because of these characteristics, they are often incorporated into unique jewelry designs.
Black Keshi pearls are special, possessing a unique brilliance created by nature.
White South Sea Pearl
Keshi pearls, a type of white South Sea pearl, are characterized by their refined and elegant luster. Many of them are large, giving them an elegant impression.
White Keshi pearls, which are harvested from the waters of Australia and Indonesia, are attractive for their gorgeous gold and silver colors. They are gaining popularity around the world as elegant jewelry.
White South Sea Keshi pearls are valued as luxurious pearls that combine presence and elegance.
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Three unique charms of rare Keshi pearls
The three unique charms of rare Keshi pearls are as follows:
- A wide variety of shapes and colors
- Gives off a beautiful glow
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Stronger than other pearls
Keshi pearls are born as a product of chance, and therefore have a special charm that other cultured pearls do not have. Not only their rarity, but also their individuality and beauty are highly valued by many jewelry lovers.
Here, we will explain in detail the three unique charms of Keshi pearls.
A wide variety of shapes and colors
The great appeal of Keshi pearls is that no two are the same, and they come in a wide variety of shapes and colors. Because they grow without a seed, they naturally deform within the mother oyster to form.
As a result, in addition to round ones, there are many oval and irregular shapes.
Depending on the type of mother shell and the environment, you can enjoy a variety of colors, including white, pink, gold, and black.
For example, Akoya Keshi is characterized by pale pink or cream color, White Pearl Keshi is gold color, and Black Pearl Keshi is deep green or black. These individual characteristics give the jewelry a unique charm.
The appeal of Keshi pearls is that they come in a wide variety of designs and can be enjoyed in one-of-a-kind ways.
Gives off a beautiful glow
Keshi pearls have a particularly beautiful shine compared to ordinary cultured pearls. This is because, since they do not have a nucleus, the nacre is thicker, resulting in a stronger interference effect when light is received.
They have a deeper luster than regular pearls and show different colors depending on the angle.
Tahitian black Keshi pearls have beautiful interference colors that are a complex mix of green, blue, and red. Akoya Keshi pearls have a delicate iridescent shine that gives them an elegant impression, and are popular as luxury jewelry.
Keshi pearls have a unique luster and are highly valued as jewelry.
Stronger than other pearls
The appeal of Keshi pearls is that they are more durable than other pearls and can be enjoyed for a long time. This is because the entire pearl is made of nacre, which means that the surface is less likely to peel off or crack.
With ordinary cultured pearls, the nacreous layer forms around the nucleus, which means that the pearls tend to deteriorate over many years of use, but this is less of a concern with Keshi pearls.
Even in vintage jewelry, you can often find Keshi pearls in beautiful condition. They are also relatively resistant to sweat and sebum, making them suitable for everyday use, and can be worn in a wide range of situations, from casual to formal.
A major advantage of Keshi pearls is that they are highly durable and can be used for a long time.
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Five points to determine the rarity and value of Keshi pearls
The following five points are used to determine the rarity and value of Keshi pearls.
- Rolling
- Shine
- shape
- color
- Size
Keshi pearls are often more expensive than cultured pearls of the same size, so it is important to have the right criteria when making your purchase.
Below we explain each of the criteria in detail.
Rolling
One of the most important factors in judging the value of Keshi pearls is their "coil". This is an element that determines the quality of Keshi pearls, which are formed without a nucleus. The thicker the coil, the more durable and the more beautiful the luster.
The thicker the nacre, the deeper the color and brilliance will be, and the more resistant it will be to deterioration even with years of use.
Japanese Akoya Keshi is particularly thickly coiled and has a delicate shine. On the other hand, thinner Akoya Keshi not only has a less beautiful surface, but is also more susceptible to scratches.
Therefore, when choosing Keshi pearls, it is important to check the thickness of the luster and select ones of good quality.
Shine
Luster is a major factor in determining the beauty of Keshi pearls, and is an important point in judging their quality. The thicker and smoother the nacre is, the more beautifully it reflects light, giving off a deeper sparkle.
High-quality Keshi pearls have a surface that reflects light like a mirror, and have such a strong shine that your face can be clearly reflected in it.
Many black Keshi pearls have a deep luster with a mixture of green and blue, making them popular as high-end jewelry. On the other hand, pearls with a weak luster tend to look whitish and are less valuable.
As such, when choosing Keshi pearls, it is important to check the intensity of luster.
shape
The appeal of Keshi pearls is that they have unique shapes and can be enjoyed in one-of-a-kind designs. Because they are seedless and naturally formed, they come in a variety of shapes, including not only round (spherical), but also baroque (irregular shape) and drop-shaped.
Symmetrical shapes and well-balanced designs for jewelry are more valuable. Baroque-shaped Keshi pearls are suitable for art jewelry, and their popularity is due to the fact that they offer a one-of-a-kind design.
On the other hand, extremely irregular shapes are difficult to process and may be valued less. One of the unique charms of Keshi pearls is that they can be designed to take advantage of the individuality of their shape.
color
One of the important factors that determine the value of Keshi pearls is their color. The color of a Keshi pearl varies depending on the type of mother oyster and the environment, and there are many variations such as white, pink, gold, and black.
Generally speaking, the more unusual the color and the more uniform the color, the more expensive it tends to be.
White Keshi pearls tend to be gold-colored, giving them a luxurious look, while black Keshi pearls have a deep, attractive green and purple color, making them popular as elegant jewelry.
The beauty of color is also an important factor in determining the value of Keshi pearls.
Size
Keshi pearls tend to be small, so the larger they are, the rarer they are. Unlike regular cultured pearls, Keshi pearls form naturally, so large ones are extremely rare and generally fetch high prices.
Keshi pearls larger than 8mm are rarely seen on the market and are often treated as collector's items.
Tahitian black Keshi pearls tend to be relatively large and are suitable for voluminous jewelry, while tiny pearls under 3mm are often used in designs where multiple pearls are combined together.
Size is also an important factor in determining the value of Keshi pearls.
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How to choose Keshi pearls - perfect for a lifetime!
Below we will explain three points on how to choose Keshi pearls.
- necklace
- Earrings
- ring
Keshi pearls are perfect for lifetime jewelry because of their rarity and unique beauty. However, it is important to choose the right item to suit your design and purpose.
By choosing jewelry that suits your lifestyle and preferences, you can create a special piece that you can cherish for a long time.
Here we will explain in detail how to choose jewelry using Keshi pearls.
necklace
Keshi pearl necklaces are popular as items that allow you to enjoy unique designs. The reason is that by stringing together Keshi pearls, each with a different shape and color, a one-of-a-kind piece of jewelry is created.
Unlike regular pearl necklaces, the design highlights the natural texture, which is an attractive feature.
The necklace made with white poppy gives a refined and elegant impression with the shine of gold. The deep color of Tahitian black poppy creates a chic atmosphere.
It can be used in a wide range of situations, from casual to formal.
Keshi pearl necklaces are unique yet easy to wear on a daily basis, making them a recommended piece of jewelry that will last a lifetime.
Earrings
Keshi pearl earrings are simple yet attractive accessories that have a strong presence. Keshi pearls are small but have a strong shine, and they have the effect of brightening up the area around the face.
Akoya Keshi earrings feature a soft pink or white glow and give off an elegant impression. Earrings made from black poppy create a cool and sophisticated atmosphere, perfect for mature women.
Keshi pearl earrings are a versatile accessory that can be worn for both everyday use and special occasions.
ring
Keshi pearl rings are the perfect jewelry for those who want to enjoy unique designs. Unlike typical round pearls, many designs utilize baroque keshi pearls, resulting in a special ring.
The ring set with large white butterfly poppies makes your fingers look gorgeous with the shine of gold. The black butterfly poppy ring is simple yet unique, and is an excellent fashion accent.
A Keshi pearl ring is a special piece of jewelry that allows you to enjoy a design that is one of a kind in the world.
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Rare types of pearls other than Keshi pearls
There are three types of pearls that are rare:
- Conch Pearl
- Avalon Pearl
- Melo Pearl
Keshi pearls are known to be rare and highly valued, but there are other rare and expensive pearls in the world.
Because it can only be produced under certain conditions, it is extremely rare on the market, making it a precious gem that you may encounter once in a lifetime.
Now, let's take a closer look at rare pearls other than Keshi pearls.
Conch Pearl
Conch pearls are one of the rarest and most valuable natural pearls. Unlike regular pearls, they do not have a coiled structure and are produced by chance in pink oysters.
Since it cannot be cultivated, only wild-harvested specimens are available on the market.
The most distinctive feature of conch pearls is the "flame pattern," a unique wavy pattern found on the inside of the shell that looks different depending on the amount of light. Most conch pearls are pink or salmon pink, and the deep pink ones are particularly expensive.
Conch pearls are extremely valuable because they are both beautiful and rare.
Avalon Pearl
Abalone pearls are rare pearls with a unique iridescent beauty. The structure of the nacreous layer is so special that the color changes from blue to green to purple depending on the angle at which the light is reflected.
Abalone pearls, found off the coast of New Zealand and California, are particularly colorful and are often fashioned into jewelry, but because the rate at which they form is so low, they rarely make it onto the market.
For this reason, Abalone Pearls are pearls that hold special value for those who seek a unique brilliance.
Melo Pearl
Melo pearls are rare natural pearls with a deep orange color. They are born by chance from the Melo shells that live in Southeast Asia, and because they cannot be cultivated, only natural ones exist.
The more vivid the flame pattern, the more expensive it tends to be traded for.
Particularly beautiful are melopearls, which have deep orange and yellow hues and a smooth luster. Large ones are extremely rare and can sell for over several million yen at auction.
Meropearls are a gemstone of special value, combining a unique color and rarity that sets them apart from other pearls.
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Three Frequently Asked Questions About the Rarity of Keshi Pearls
Below are three frequently asked questions regarding the rarity of Keshi pearls.
- What is the most precious pearl?
- What color are the rarest pearls?
- What is the difference between Keshi pearls and Baroque pearls?
Keshi pearls are known for their rarity, but many people have questions about their value and characteristics compared to other high-quality pearls.
Here we will answer questions related to the rarity of Keshi pearls.
What is the most precious pearl?
One of the most precious pearls in the world is the "Melo Pearl" or "Conch Pearl". These pearls can only be found in the wild and cannot be cultured.
In addition, the production volume is extremely low and beautiful stones are highly valuable, so they are traded at high prices.
Bright orange melo pearls and conch pearls with distinct flame patterns can sell for millions or even tens of millions of yen at auction.
They are some of the most expensive pearls traded on the market.
What color are the rarest pearls?
The rarest pearl colors are orange, pink, gold, etc. These colors can only come from certain types of oysters, and it is extremely rare to find pearls with beautiful natural colors.
The orange color of melo pearls, the pink color of conch pearls, and the gold color of South Sea pearls are particularly rare and are highly valued as luxury jewelry. Black pearls are also rare, but those from Tahiti are relatively common, and the deep blue-black color is particularly rare.
Pearls with special colors are rare and valued as fine jewelry.
What is the difference between Keshi pearls and Baroque pearls?
Although Keshi pearls and Baroque pearls both have unique shapes, there are significant differences between them.
This is because Keshi pearls form naturally without a nucleus, whereas baroque pearls are the accidental transformation of cultured pearls that do have a nucleus.
Keshi pearls are attractive because of the random shapes that are unique to natural pearls, and those with a particularly strong luster are highly valued. On the other hand, baroque pearls refer to cultured pearls with unique shapes, and are often used in large, unique designs.
As mentioned above, although Keshi pearls and Baroque pearls look similar, it is important to note that their formation mechanisms are very different.
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Summary: Keshi pearls are rare and one-of-a-kind!
Keshi pearls are born by chance, so each one has a different shape and shine. Because of their rarity, they have a special value compared to other pearls, and their appeal as jewelry is also outstanding.
In terms of rarity, they are on par with high-quality pearls such as conch pearls and melo pearls, and are especially valued for their beautiful luster and color. Another attraction is that they can be enjoyed in a variety of ways, such as necklaces, earrings, and rings.
With their unique brilliance, Keshi pearls are suitable for jewelry that can be enjoyed for a long time, making them the perfect choice for those looking for a special piece.