Composite of Niobium, Zirconium, and various Titanium grades (mainly Gr2, Gr5, Gr7, Gr9). Zirconium (Zr) is an extremely corrosion-resistant metal, adding a black (and its shades) color. Niobium brings more color into a composite. You can reach different colors by electro-chemical or heat oxidation. Each piece of material can be colored differently. It's suitable for knifemaking, jewelry applications, or watchmaking. The material is fully hypoallergenic. Marking: "FF Rainbow Nb". Hashtags: #RainbowFuturon #RainbowNb
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