Silver and aluminum wire how to identify? There are several options?
Find a small amount of sulfur, wipe on silk, a smear is not black, silver, aluminum wire. If blackened, the fire will turn silver again. The advantage is that it hardly hurts the material.
Find a similar size copper or iron wire, copper wire or wire weigh, than the weight (or similar) is rather than silver, copper and iron wire is a lot of light aluminum wire. Advantages do not hurt the material.