Yes it is. If gold-plated jewelry is worn often, the plating will wear off and expose the base metal beneath.
24 carat gold is 100 % gold; 23 carat gold is 95,833 % gold.
Gold plating depends on the spot price of gold. Gold plating is extremely thin, but gold is expensive too.
916kdm gold is 24 carat gold
In general, 24 carat gold is considered pure gold (99.9999% or so). That means that 18 carat gold is 75% gold, and 12 carat gold is 50% gold. At this rate, 23 carat gold is 95.8333% pure gold.
Elctroplated gold is gold plating on other metals. The object shines and looks as gold because of the gold plating. Anode and cathode are used for gold plating.
12 carat gold is half of 24 carat gold, which is considered "pure gold"...so 12 carat gold is 50% real gold
18 carat gold
This will depend on the material you are interested in plating with. As the price of gold goes up, even plating with gold will become more and more expensive. Plating with silver will be less pricey than plating with gold.
Pure gold is 24 carat (100%) 80% gold is 19,2 carat
different materials are mixed with the gold 18 carat is 75 percent gold
24-carat gold is 99.9% gold