The industrial name for a gold-copper alloy is Rose Goldor Tumbaga.
If you also add silver to the alloy you get Electrum.
Group 14 in the periodic table of Mendeleev: copper, gold, silver.
Places in the Philippines known for their mineral deposits include the Caraga region for gold, copper, and nickel; Zambales for chromite; Compostela Valley for gold; and Surigao del Norte for nickel. Other mineral-rich areas include Benguet for gold, Cebu for limestone, and Palawan for nickel and copper.
Chalcopyrite is sometimes called fools gold because of its bright golden color, similar to real gold. However, it does not contain any gold and lacks the properties of gold, making it less valuable. Its name comes from the Greek words "chalcos" (copper) and "pyrites" (striking fire), as chalcopyrite is a copper ore that can create sparks when struck against metal.
The compound is copper (I) perchlorate Cu(ClO4) The similar compound, copper (II) perchlorate is Cu(ClO4)2
The formula may be Cu3N and name is copper nitride.
Gold is typically mixed with metals such as silver, copper, nickel, or zinc to create different alloys with varying properties. For example, mixing gold with copper creates rose gold, while mixing it with silver creates white gold.
"heat treatable aluminum alloy". There are usually other elements added as well, for various properties.
coal and copper and gold
gold, sivler, and copper
Copper, gold, silver, to name only three.
iron-group 8 copper silver and gold-group 11
Leaving aside superconductors: graphene, silver, copper.
Meddlemeddle spoongold/silver
(diamonds, gold, copper, oil).
I think the only metals which are not white are gold and copper. And definitely, gold is that yellow metal.
Cobalt, gold, copper, silver, there are a lot of them that are the same colour as their name. If you can really consider the colours above as true colours.
Transitional elements/metals.