Designed and polished by Kyoto-based knife polisher Ivan Fonseca, each Dog Tag reflects his deep respect for Japanese sword craftsmanship. Using traditional polishing methods typically reserved for fine blades, he brings out the depth, clarity, and natural beauty of tamahagane. The minimalist form is intentional—allowing the material to speak for itself while expressing strength and refinement. More than an accessory, this piece is a wearable reflection of Ivan’s dedication to form, function, and the spirit of craftsmanship.

Both the jump ring and the chain are made of 925 sterling silver, valued for its strength, warmth, and subtle shine. Over time, it develops a gentle patina that adds depth and character.

The chain features an etched finish that the layered surface of tamahagane steel, creating a refined contrast between silver’s brightness and the raw texture of the Dog Tag. This thoughtful pairing enhances the piece’s overall harmony, blending traditional metalwork with a modern edge.

Tamahagane and Japanese swords are generally resistant to rust as long as they remain clean. However, when touched or worn, they can accumulate dust, skin oils, and other residues that may lead to tarnishing or corrosion over time.

To preserve the piece, gently wipe it with a clean tissue or soft cloth free from additives after use or touch. After wiping it, protection, apply a light coating of traditional sword oil, such as camellia or clove oil, just as you would with a Japanese blade.