I assume you're referring to the item "khroma ore" that appears in Final Fantasy XI. The word "khroma" comes from the Greek for "color" (like "chromatic"). It seems likely that in this context, it refers to chromium.
Colour in greek is χρώμα (khroma).
Colour. So a chromatograph is a diagram of colours. It's Greek in origin.
Greek "khroma" for "color" is the root, and Greek prefix "mono-" which means "single". Source: etymonline.com
The meaning of the word "gold" referring to the metal came first, with its origins dating back to ancient times. The use of "gold" to describe the color derived from the metal's distinct hue.
Mercury is a latin word-it was the name for the roman god of messages, travel, thieves and luck (greek god Hermes). The planet Mercury was named after the god. If you are asking for the metal mercury, it would have come from the god's name, and it is unlikely that the romans had a specific word for that metal.
Chromite is the ore from which chromium, a metal, is derived.
Diamond (not a metal, but special carbon form)
The metal that ends with the letter "R" is "silver." Silver is a lustrous, white metal known for its conductivity and use in jewelry, coins, and electronics. Its chemical symbol is Ag, derived from the Latin word for silver, "argentum."
The word factory is derived from the medieval Latin word factoria. It is also derived from the Latin word factor.
it is derived from the word Helium.
The name is derived from the Tamil word murunggai (முருங்கை)
The chemical element Lead is named after the Anglo-Saxon word "lead" or "lead-" which means the metal. The symbol for lead on the periodic table is Pb, derived from the Latin word "plumbum," which refers to the metal.