A metal rim or border.

Silver coloring technique; decorative metalwork using silver to create designs on fittings.

Silver polished ground; a mirror-bright silver finish achieved through careful polishing and burnishing techniques.

Silver inlay.

Flat inlay technique where metal is set flush with the surface.

A repair technique using molten metal to fill gaps or cracks in the blade surface.

Medicine case carving; relief carving technique resembling decorations on traditional inrō boxes.

Sulfur-treated metal surface finish that creates a distinctive yellowish patina on iron fittings.

Colored metalwork; polychrome inlay using various metals.

Colored metals; various metal alloys used for decorative inlay work on sword fittings.

Positive silhouette openwork.

Golden color or gold-toned finish applied to metal sword fittings.