Yes, yellow gold is an alloy made of copper, to strengthen the it, and gold.
No, white gold is not pure gold, but it is an alloy of gold with any other metal like palladium, rhodium, etc.
Electrum is an alloy of gold and silver.
16 karat gold is 2/3 gold with 1/3 alloy (copper).
It depends on the Karat weight. 18K white gold is 75% gold and 25% alloy, 14K white gold is 58% gold and 42% alloy, 9K white gold is 32% gold and 68% alloy. White and yellow gold have exactly the same gold content. The only difference is the alloy mixed with the gold. White gold is usually yellow gold mixed with silver, palladium or nickel.
First of all, no gemstone looks like copper. Copper is a metal, not a gemstone. Tin is silver or gray in color, like most other metals. The only pure metals that do not have a silver color are gold and cesium. Cesium is not an option for jewelry because it melts at just above room temperature and very readily catches on fire. So you only option other than copper or gold would be some sort of alloy such as brass, which is a copper-zinc alloy or bronze, which is a copper-tin alloy.
Yes, yellow gold is an alloy made of copper, to strengthen the it, and gold.
No, white gold is not pure gold, but it is an alloy of gold with any other metal like palladium, rhodium, etc.
White gold is one of the many alloys of gold. It contains at least one of nickel, manganese or palladium. In the same types of processes other gold alloy colours can be attained:Pure gold: YellowYellow Gold: An alloy of gold and copperRose/Pink Gold: An alloy of gold and a higher proportion of copperGreen Gold: An alloy of gold and silver
1 percent alloy. The gold would be soft.
It looks gold
Looks like gold, but isn't.
steel is an alloy
steel is an alloy
Electrum is an alloy of gold and silver.
Probably 18 karat gold/nickel alloy. White gold is gold mixed with nickel and looks silver.
16 karat gold is 2/3 gold with 1/3 alloy (copper).