Shihō-bishi Sukashi Tsuba with Sekigane 四方菱形透鐔

Tsuba (Sword Guard) “Shihō-bishi”｜Hand-Polished Openwork Iron Geometric Diamond Motif with Copper Sekigane and Black Patina Finish

The “Shihō-bishi” (四方菱) tsuba is an openwork iron guard (sukashi tsuba) featuring a refined geometric pattern of four interlocking diamond shapes arranged in perfect symmetry. This balanced composition embodies both order and strength — a design that reflects the disciplined aesthetic of Edo-period metalwork and the samurai ideal of harmony through structure.

Each line and angle is hand-cut with precision, producing an interplay of light and shadow that emphasizes the purity of form. The surface is finished with a deep ni-kuro shiage (煮黒仕上げ) black patina, giving the iron a subtle, timeless sheen. Copper sekigane (責金) inserts reinforce the nakago-ana, ensuring a perfect fit while adding a gentle contrast of warm tone against the dark metal.

Minimal yet powerful, the Shihō-bishi Sukashi Tsuba represents the elegance of geometry in Japanese sword fittings — a visual expression of balance, protection, and enduring craftsmanship.