What is rayskin (samegawa) on a sword saya, and why does it matter?

 Updated Mar 2026

Samegawa is the ray skin (or shark skin) traditionally used to wrap sword handles and, in some styles, saya (scabbards). The material has a distinctive pebbly texture formed by small calcium nodules called denticles. On a saya, a rayskin wrap adds both grip and a tactile quality that lacquered wood or synthetic wraps cannot replicate. For collectors, it is a marker of higher construction intent — rayskin wrapping requires more labor to apply cleanly, and its natural variation means no two pieces are identical. On the T10 Zatoichi-style piece in this collection, the green rayskin saya creates a direct visual and textural contrast to the polished blade, adding depth to the overall display presentation.

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