I’ve loved keshi pearls ever since I started beading.
That organic, singular, unrepeatable quality gets me. A little fold here, a soft edge there, a shape that feels like it could only have happened once. I love looking at a pearl and knowing that its exact combination of shape, surface, and glow belongs to that one pearl.
And then there’s the feeling of holding one. The weight in my hand. Knowing I’m holding a pearl grown without an implanted bead at its center. That “all nacre” quality is part of what makes keshi so exciting to me.
Turn it in the light and watch that deep luster move across the surface.
Whew. It’s the best.
What is a keshi pearl?
In its strict gemological use, a keshi cultured pearl is a saltwater cultured pearl that grows without an implanted bead nucleus. Keshi can come from Akoya, Tahitian, and South Sea pearl oysters. The name comes from the Japanese word for “poppy seed,” a reference to the tiny pearls originally associated with the term. Today, keshi can be much larger. [1]
In the bead world, you’ll also encounter “freshwater keshi”. I’ll explain that name below, because the trade uses it more broadly.
How do keshi pearls form?
One familiar route begins during bead-nucleated pearl farming:
- A technician places a small piece of donor mantle tissue and a bead nucleus inside a pearl oyster. The tissue helps establish the pearl sac, the living tissue that deposits pearl material.
- Sometimes the oyster expels the bead, while the tissue remains and a functioning pearl sac develops or survives.
- The sac can continue depositing nacre without that bead inside, producing a non-bead cultured pearl.
Keshi can also arise from small pieces of graft tissue or tissue displaced during handling. Bead rejection is one route, rather than the explanation for every keshi. Because pearl farming initiates their formation, these are cultured pearls, even when their arrival is an unexpected bonus. [2]
What “all nacre” means
Nacre is the luminous, layered material that makes these pearls so beautiful. It consists of microscopic mineral platelets held together with natural organic material. Its structure creates the optical effects we admire when we turn a pearl in the light. [1]
“All nacre” is the familiar way pearl lovers describe a keshi’s lack of an implanted bead center. There is a small scientific refinement: some keshi contain organic-rich areas or internal spaces, so the phrase isn’t a guarantee that every interior is uniformly solid nacre. [3]
What excites me is still there: the pearl material itself, grown by a living mollusk, taking on this particular shape. I love feeling its substance in my hand. Weight is part of that enjoyment for me; it isn’t a test that identifies a keshi.
That luster. Those little flashes of color.
Luster describes the light reflected from a pearl’s surface and near-surface layers. Strong luster gives bright, distinct reflections. Some pearls also show orient, that shifting, rainbow-like shimmer on or just beneath the surface. Quality varies from pearl to pearl, so I would always look at the individual pearl’s glow. [4]
With the keshi I love, there’s so much to look at. A ridge catches the light. A curve holds a soft pool of color. Turn it a little more and something else appears.
That is the part I could happily keep looking at. The pearl is small enough to hold between my fingers, and there is still more to see.
A useful note about freshwater “keshi”
The rippled, petal-like freshwater pearls sold as “keshi” are familiar favorites in bead shops. Freshwater pearl farming has a long history of growing pearls without bead nuclei, including pearls described as keshi in the trade. [5]
The name alone doesn’t tell us precisely how a particular freshwater pearl formed. Some are deliberately grown without a bead from the outset. We shouldn’t assume that every petal-shaped freshwater pearl began by rejecting one.
For a specific strand or loose pearl, useful questions are: Is it freshwater or saltwater? Does it have a bead nucleus? Is its color natural or treated? Those details help you understand what you’re buying. And freshwater pearls grow in freshwater mussels, in lakes, ponds, or rivers—their story begins there. [6]
Keshi and baroque describe different things
Baroque describes an irregular shape. Keshi describes a type of non-bead cultured pearl. A keshi may have a baroque shape, and an irregular pearl may also have a bead inside. Its outline alone cannot tell you which it is. [1]
For me, those individual outlines are a big part of the attraction. A keshi can suggest a petal, a little wing, or something I don’t have a name for yet. That gives me somewhere to begin when I’m making jewelry.
A buying tip I learned the hard way
Keshi can be a bigger investment than basic freshwater pearl beads, with the type and quality affecting the price. I want to be sure the ones I buy will work for the jewelry I have in mind.
I’ve accidentally purchased loose keshi with no holes! I didn’t realize then how challenging it can be to drill a thin keshi. Without the right skills and tools, it may be impractical—or impossible to drill that particular pearl without damaging it.
If you buy your keshi unstrung, make sure you check for holes. Ask whether it is undrilled, half-drilled, or drilled all the way through, and whether the hole’s size and direction suit your design. Don’t assume it can be drilled later.
Let the pearl help you design
If you’re working with keshi for the first time, give yourself a few minutes to turn them over, lay them out, and see which shapes you keep reaching for.
- For earrings: look for two pearls with a pleasing balance of size, color, and visual weight. Their differences can make the pair interesting. Hold them upright to see how each will hang.
- For a pendant: try one pearl on a simple wire wrap or chain. Leave enough of its outline visible to enjoy the shape that drew you to it.
- For a necklace: experiment with the direction of the pearls. A turn or a little space between them can change the whole rhythm of the piece.
- For accents: try a small colored gemstone or a little metal beside the pearl, then step back and see whether you still notice its luster.
Check the actual drill hole before choosing wire or cord. Hole size and drilling direction vary. Give thin edges room, and avoid forcing wire through a hole or pressing a tight wrap against a delicate part of the pearl.
Still a favorite, after all this time
Keshi have stayed with me since the beginning of my beading life. I still love that each one gives me something slightly different to notice: a fold, a contour, a flash of color, that wonderful glow.
Organic. Singular. Unrepeatable.
That is what makes them special to me. And if you love them too, I think you know exactly what I mean.
Find a pearl that makes you stop and look.
Explore keshi pearls at The Bead Gallery, or visit us in Honolulu and let us help you choose pearls for your next project. For a wider look at pearl types, read our pearl shopping guide.
Live. Love. Create.
Jamie
For the curious pearl lover
The pearl-growing details above draw on these gemological references.
- CIBJO: Guide for Classifying Natural Pearls and Cultured Pearls — nacre, shapes, and keshi terminology.
- CIBJO: Pearl Blue Book — cultured pearl sacs and keshi formation.
- GIA: Organic-Rich Cores in South Sea Non-Bead Cultured “Keshi” Pearls — the interiors of non-bead cultured pearls.
- GIA: Pearl Quality Factors — luster and orient.
- GIA: Cultured Pearls from Lake Kasumigaura — freshwater cultivation and historical use of “keshi.”
- GIA: Different Pearl Types Explained — freshwater and saltwater pearl growing.