
Metal Alloy (Likely Pewter or Sterling Silver)
Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).
Hardness varies greatly depending on the alloy composition. Color is typically silvery-gray or shiny silver. Luster is metallic. Crystal structure is crystalline, but often fine-grained due to casting/forming processes. Not applicable for cleavage as it's an alloy, not a single crystal.…
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