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Biwako Jewels

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Lake Biwa is the birthplace of cultured freshwater pearls in the world.

Since 1924, Lake Biwa has been supplying high-quality and beautiful freshwater pearls to the world over the past century. BIWAKO produces new creations by combining traditional Japanese craftsmanship with modern aesthetics.

IKECHO, the unique kind of freshwater mussel in Lake Biwa, is the pride of BIWAKO that we are cultivating.

BIWAKO'S pearl cultivation, processing, design, and environmental protection technologies are at the forefront of the industry worldwide.

The brand offers masterpieces emphasizing natural beauty, femininity and aesthetic designs, making it a popular brand among women in Japan and worldwide.

By challenging definitions and rules, BIWAKO focuses on contemporary designs of Eastern aesthetics. With beauty illuminating life, one can always discover a new self.


The Nishimura Family and BIWAKO[edit]

The Nishimura Family is proud of its pearl culturing and trading business, which started in the mid-20th century.

In 1976, when Mr. Nishimura Masakazu guided pearls[1] to the first department store in Japan, Nihonbashi Mitsukoshi Main Store, he noticed the gradual increase in consumers' demand for pearl designs. Therefore, he decided to integrate the world's pearl resources to explore more possibilities for pearls.

In 1980, Mr. Nishimura Masakazu[2] embarked on a pearl journey along the equator, visiting Fiji, Tahiti, Indonesia, Australia, and Papua New Guinea. In 1988, he established Aquatec[3], a company which provides technical support to major pearl farms worldwide.

Mr. Nishimura Masakazu spent 50 years completing a cycle spanned the oceans, from pearl culturing technology to the global pearl trade. In the Reiwa era, after fully understanding the world, he returned to the starting point of pearl culturing – BIWAKO, as the world witnessed the birth of BIWAKO's pearl design business.

The results have been accumulated over three generations, from raw materials to design and manufacturing and throughout the entire supply chain.

Pearls are like life, and the process of nurturing them brings us eternal hope.

No matter how time changes, the Nishimura Family is always committed to delivering this unique underwater treasure to every customer who loves pearls.


The Classic Collection:

Each pearl is carefully selected from the origin of freshwater pearls in the world, Lake Biwa.

Using the BIWAKO brand logo as the design centre, the red lacquered beads symbolize the White Beard Shrine that guards Lake Biwa.

With these unique elements that carry beautiful meanings, we interpret this land and water's hundred-year history and beauty together.


The design elements are inspired by Lake Biwa in Japan and interpreted using modern design language.

The undulating lines depict the smooth and graceful flow of the lake in Mori Yuzan's "Hamonshu," outlining the graceful physical beauty of women with inspiration from nature.

It is a collaborative creation with nature.

IKECHO and IKECHO Grading[edit]


The unique freshwater pearl of Lake Biwa, IKECHO, is the core element of BIWAKO's pride and joy.

During the cultivation process, the pearl mussels filter and purify the nutrient-rich algae, effectively protecting the natural body of water.

As a result, BIWAKO's pearl cultivation base has become an important part of the ecological restoration of Lake Biwa since the 1970s. The clear and clean water quality has also greatly improved the quality of IKECHO pearls.

For half a century, BIWAKO has achieved incredible creative designs through strict control of IKECHO pearl quality, relentless pursuit of craftsmanship, and unique emotional insights.

IKECHO Grading[edit]

IKECHO pearls are classified into six categories.



Fireflies represent forest spirits, the embodiment of aquatic plants, and the moon's reflection on Lake Biwa.

Through fireflies, you can reconnect with the people you want to meet once again.


>5 mm variegated

In Eastern tales, Koi is the embodiment of wild vitality and courage. The gorgeously-coloured koi fish musters up the courage to jump higher and higher, ultimately reaching infinite freedom and happiness.


>5 mm near round

In the Anthology of Ten Thousand Leaves, white jade is a metaphor for the pearls in Lake Biwa, which symbolizes vitality, appreciation and beauty.

Born not to be perfect, it shines enough to dazzle and make you appreciate its uniqueness.


> 5mm pink

The Sakura pearl reminds us of all the sweet and beautiful moments we've experienced in life. Standing under a cherry blossom tree, our faces lightly touched by the falling petals, the air turns pink, and everything seems magical.


>5 mm near round, pure white

The tide, the night, and the opening and closing of clams are all related to the moon. The Eastern Moon is a representation of time, destiny and mystery. You can find all the beauty of the East on the moon. Who could be more captivating than the ever-changing and sensuous moon?


> 5mm perfectly round, pure white, strong gloss and smooth

This pearl is named after the night when the full moon is the roundest, on the 16th day of August. It represents an entity that's grand, full of vitality, and perfect in every way. The Eastern moon god dwells here. Beyond perfection, it also exudes a gentle and tender feeling, like an autumn breeze.


  1. Singh, Monika. "Pearl exports". FijiTimes. Retrieved 2023-05-05.
  2. "Press Release: Civa Fiji Pearls Commences Exports To Japan". Civa Fiji Pearls Boutique. 14 December 2016. Retrieved 2023-05-04.
  3. "Pearl farm secures Japan exports". Fiji Broadcasting Corporation. Retrieved 2023-05-05.

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