602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F
602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F 602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F

kurokigoishiten

602-BEGB-01 Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones GKBC-MR30-512-01F

¥228,000

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This is a pair of large Black Claro Walnut Go bowls with burl figure (kobu-moku) crafted by Traditional Craftsman Biei, designed for Go stones up to size 30.
Among figured woods, this piece is made from the exceptionally rare burl figure (kobu-moku), making it truly outstanding.

These beautiful Go bowls are created using lathe woodcraft techniques refined over more than 50 years of experience.
Black Claro Walnut is a rare North American walnut known for producing especially striking figured grain.
Its intricate stripes and flowing, undulating patterns vary from piece to piece—truly a work of art shaped by nature.
Compared to standard walnut, it displays stronger color contrast, ranging from deep chocolate brown to purplish dark brown tones.
The three-dimensional figuring that emerges depending on the light adds a refined visual accent to the quiet tension of the Go board.
With balanced hardness and stability, these bowls are fully practical for everyday play while also possessing a strong presence as display pieces.
With continued use, the surface gains greater luster and the tones deepen into a richer, more subdued character.
No two grain patterns are ever the same—each piece is truly one of a kind.
These are special Go bowls that allow you to experience the joy of true ownership.

These Go bowls feature burl figure (kobu-moku) throughout, making them a highly rare and valuable piece.
*There are several repaired cracks.
*Please refer to the photos for details.
*This Go Bowl is for Go stones up to size 30.
*A copy of the Traditional Craftsman certification is included.

Black Claro Walnut is a rare North American hardwood highly valued in premium fields such as luxury automobile interiors, single-slab furniture, fine crafts made from select timber, and fountain pens. It is beloved by artisans around the world for its beauty and character.
Although it is a walnut tree that produces edible nuts, like common walnut, Black Claro Walnut differs in that it is created through intentional grafting rather than occurring purely in nature.
It is obtained from the grafted or hybridized junction between Claro walnut and English walnut trees.
Wood taken especially from the root area and around the graft union often develops extremely complex and decorative figuring due to internal stresses and growth conditions.
Originally cultivated to produce nutrient-rich walnuts, the wood itself gained high value because of its exceptional beauty.
Since grafted trees have a relatively low survival rate and are difficult to grow into large mature trees, thick and long pieces of Claro walnut lumber are particularly rare.

Black Claro Walnut size 30 burl figure
A defining feature of its figured grain is the intricate, interwoven patterns and shimmering highlights that give the material a striking beauty and strength distinct from other woods.
Unlike standard walnut, which typically shows consistent brown tones, Claro walnut displays flowing variations of brown, black, and creamy whitish hues, creating dramatic contrast and depth.

“Kobu-moku” (burl figure) refers to highly decorative grain that appears in the burl formations of a tree.
In these knot-like growths found on the trunk or near the roots, the wood fibers grow in complex, interwoven, and irregular directions.
As a result, unlike straight grain, the surface reveals distinctive swirling or bead-like patterns that are entirely unique.
Black Claro Walnut size 30 burl figure
A defining characteristic of burl figure is its three-dimensional luster and sense of depth created by the irregular fiber structure.
Depending on the angle of light and viewing perspective, the surface expression changes, sometimes resembling ripples on water or a sea of clouds, creating a dreamlike visual effect.
No two patterns are ever the same, and each piece possesses a truly one-of-a-kind character.
Because the fibers are intertwined, burl wood is more difficult to work than straight-grained material, but the finished result offers exceptional presence and beauty.
It is highly valued as a decorative wood and is used in fine crafts, turned woodwork, luxury furniture, and musical instruments.

A natural form shaped over long years by the tree itself—
Burl figure can be described as a unique work of art carved by nature.

Biei
Traditional Craftsman Biei was born in Gunma Prefecture into a family engaged in lathe-turned woodworking and has spent over 50 years studying and refining the techniques of lathe woodcraft.
Working daily with a wide variety of woods, he continues to produce high-quality Go bowls through skilled craftsmanship and careful attention to detail.

In recognition of his expertise in lathe woodcraft, he was certified as a “Traditional Craftsman” in 2000.

  • Traditional craftsman Biei made Black Claro Walnut Go Bowls Large Burl Figure (Kobu-moku) for size 25 - 30 Go stones
    Product No.：GKBC-MR30-512-01F
    Conformity Go stone for size：size 25 - 30
    Size：Go Bowl / Diameter About 150 mm × Height About 105 mm
    Outer box size: approx. 315 mm × 162 mm × 110 mm (H × W × D)
    Weight：Go Bowl / 1 About 580 g
    Total Weight / About 790 g
  • 1,000 JPY flat rate shipping within Japan, free shipping for purchases totaling 20,000 JPY or more.
    Please bear the actual cost for shipping charges outside Japan.
You may find small knots, burrs, rolled-in bark as all these products are made of natural trees.
There may be some small flaw or scratch, dent, chipping.

Only 1 piece in stock!

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