This is a decorative object of art; the English word is inlay.
Inlaid silver has two definitions. It is can be used to refer to a metal that is coated with silver. It can also mean a piece of silver that is embedded in another substance.
Hydrabad is famous for stone studded colored bangles and other bridal finery. It is also famous for Bidriware, a type of encrusted metalwork where one metal is inlaid or overlaid on another metal
The word inlaid is an adjective, not a noun, so has no plural.
mixture of metals or a mixture of a metal and another element
International Silver - the company that took them over in 1898.
depositing a metal to another
A mosaic of inlaid wood.
A silver-colored alloy of gold with nickel,platinum, or another metal.
clothed, dressed; having a bonded outer layer of another metal or an alloy
If by crudest you mean most common I would have to say Iron. Carbon is another option but that isn't a metal.
mosaic
mosaic