Authenticity determination method

摘要

An amorphous alloy member including an irregular region having a center line average roughness Ra of 0.1 µm to 1000 µm on a surface, at least the irregular region including an amorphous alloy having an amorphous phase at a volume ratio of 50% to 100%. A process for manufacturing the amorphous alloy member, and an authenticity determination device and an authenticity determination method using the amorphous alloy member.