Lustrous
Gold is: a noun -- We put the gold into a bag and left. an adjective -- They gave him a gold watch when he retired
The adjective for gold is "golden".
Gold is either a noun or an adjective
"Silver" can be an adjective. There is also "silvery."
golden
Sandra's hair is gold and beautiful.
The word gold as a color, or as the material composing an object, is an adjective (e.g. gold paint, gold watch). It may also be a noun, for the element or the color itself (e.g. my favorite color is gold). But it cannot be a pronoun.
golden
Gold is: a noun -- We put the gold into a bag and left. an adjective -- They gave him a gold watch when he retired
"Gold" can be categorized as a noun when referring to the metallic element or a color. It can also function as an adjective when describing something as similar to the color or metal gold.
In the term "gold dagger," the adjective would be gold. If you are looking for adjectives to describe a gold dagger, some possibilities are:shinycoldsharpdangerousjagged
The name of the metal is aurum (-i, n.). The adjective meaning "made of gold" (as in, for example, "a gold watch") is aureus, -a, -um).