Kosa Pakku Sterling Silver Akoya Pearl Earrings

To know “myself” by feeling “different”

Collaborative earrings with Kasuko Nishibayashi, a contemporary jewelry artist active in Germany.


It may be a hassle, but let's get involved with people a little more.

The semi baroque blue-gray pearls from Uwajima are all different and unique.

Because the world is full of colorful people,

by crossing, we can feel to know “myself” by feeling “different”


This collection was created by providing pearls from Doi Pearl Farm in Uwajima, Ehime prefecture in Japan.


Very simple lines, a fun shape that highlights the beauty of pearls.

kosa[こうさ] シルバー925 あこやパールピアス MENTOSEN

Enjoy the texture of metal

The faint matting on the surface intersects slightly.

It is the handiwork of the artisan.

Using CNC computer cutting technology, it is made from a silver plate and is beautifully finished without distortion.

The sides are thick and the back is shiny and polished.

When the pearl comes above the ear, the slight height of the pearl lifts the earring, giving the entire earring a three-dimensional appearance.

It looks different when the pearls are placed below the earlobes.

Semi Baroque, blue-gray pearls from Uwajima

Akoya pearls cultivated in the sea of Uwajima, Doi Pearl's farm.

All of those pearls may not be perfect spheres.

However, the blue-gray color and shine are really beautiful.

For mass production, pearls that are not in circulation because they are not perfect spheres.

To be completed the ring, it is necessary to adjust the ring according to the different shape of each pearl.

Even a little deformation is shine enough.

Note that each pearl is slightly different in shape. 

Kosa[こうさ] シルバー925 あこやパールピアス 宇和島 MENTOSEN

Natural color pearl

This blue-gray color is a natural color that is not dyed or toned, a pearl called "natural".
It is a pearl grown in Mr. Doi's pearl farm in Uwajima, Ehime prefecture in Japan.
* A process called color stop is applied to prevent fading.

Kosa[こうさ] シルバー925 あこやパールピアス MENTOSEN

Living everyday in a simple and beautiful shape

Kosa [Kosa] two shapes

"Kakko" and "Pakku"

You can purchase "Kakko" here.

Kosa[こうさ] シルバー925 ピアス MENTOSEN

Kind of metal

To prevent oxidation, they are coated with a platinum-based metal rhodium.


Draft design

クリエイター Xilin Jia Shouzi Kazuko Nishibayashi メントセン MENTOSEN

Kazuko Nishibayashi

Graduated from Joshibi University of Art and Design, Department of Life Design. Auditor in the Department of Jewelery, Pforzheim College, Germany. Established an atelier in Dusseldorf, Germany in 1993, and exhibited in various parts of Europe based in Germany.Currently living in Dusseldorf. He is active as a contemporary jewelery artist in Germany.

Works by Kasuko Nishibayashi

Creativity, absolute beauty and accurate work.The result is a long-lasting design.
Kazuko Nishibayashi website

Kazuko Nishibayashi Ring 西林加寿子 リング
Kazuko Nishibayashi earrings 西林加寿子 ピアス
Kazuko Nishibayashi ring 西林加寿子 リング

People involved in the production

material Silver 925 (rhodium coated) Akoya pearls
size Pakku: 12mm x 9mm Pearl appx. 5mm
  • If you make a mistake in your order, we will only cancel or change your order within 6 hours of your order.