Yes, all gold is real
No, plumb gold is not real gold. Plumb gold is a term used to describe an alloy that has a specific gold content by weight, typically 75% gold.
You can tell if you have a real gold necklace by checking its hardness, luster, specific gravity, streak, cleavage, and fracture, if all the properties match with the properties of gold you have a gold necklace.
Gold Olympic medals are real gold, but they are not all gold. They are usually just coated with gold. The rest of the medal is usually silver. There are standards as to how much gold is actually on the gold medals.
Gold does not tarnish at all, unlike silver that tarnishes from H2S
You can determine if a ring is real gold by looking for marks such as a karat stamp (e.g. 10K, 14K, 18K) indicating the purity of the gold. You can also perform a simple acid test or take it to a jeweler for professional testing. Additionally, real gold will not tarnish or discolor skin.
real gold
Gold is an element. Only gold is real gold.
Gold-185 is a real chemical type of gold
yes
No, not all gold coins have dates and mint marks. It depends on the specific coin and minting process.
microwave at 490
We tell real gold by its weight.