Osmium - Impossible to couterfeit

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A significant advantage arising from this property is the fact that osmium cannot be counterfeited. Its crystalline surface is recognised with extreme reliability similar to a fingerprint.

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The unique structure of the friction ridges of a human finger is used for the recognition of a fingerprint.

For osmium, the edge of any single crystal is the analogue to the friction ridges. Every single such edge is inclined in three-dimensional space, forms a specific angle with the level metal bottom surface and has a clearly defined surface as well. Also, each crystal sticks out of the base material with a clearly identifiable length.

Even a standard 3 mm osmium diamond already contains more than 1,000 such macroscopic features. At the microscopic level, there are millions of features. For a larger surface area of an osmium structure, the number of variables multiplies accordingly.

For this reason, while a 10,000-fold higher security in comparison to a fingerprint is often mentioned, the actual security is many times higher. Exact numbers cannot be given as, if in doubt, ever smaller structures could be considered.

When gold is forged, a piece of metal of comparable density is often covered with a more or less thick gold coating. Alternatively, a gold ingot may be filled with another metal.

For osmium, only one metal is known that differs from osmium in density by just a few hundredths of a gram. This metal is Iridium. However, no forgery can be carried out with iridium either, since not only have both metals high melting points but coating them at these temperatures also means that the other metal would lose its shape. However, this case is just hypothetical, because osmium is delivered in very thin struc-ures as bars so that a real “interior” does not even exist.

Attempts to crystallise iridium ingots must also fail because iridium has a different crystallisation structure so that it is clear and visible to the naked eye whether it is ruthenium, iridium or osmium in the form of either ingots or bars.

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