It all depends of the alloy content.
Regardless of the fineness of the gold in the alloy, the allergy might be caused by the nickel content in that alloy.
The best is to ask in the jewelry store, prior to the purchase, if the golden jewelry contains any nickel.
Yes, yellow gold is an alloy made of copper, to strengthen the it, and gold.
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.
steel is an alloy
steel is an alloy
Electrum is an alloy of gold and silver.
16 karat gold is 2/3 gold with 1/3 alloy (copper).
It depends on what color gold you are seeking. The two most common are white and yellow. White gold is an alloy of gold and either nickel, palladium, silver, or manganese. Some people are allergic to nickel, so make sure you know what your jewelry is alloyed with. Yellow gold is generally a mixture of gold and copper. Blue gold is an alloy of gold and indium. Purple is gold and aluminum. Rose gold cannot be 14K because in order to make gold reddish, it has to be mostly 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.
alloy
Gold is an alloy and it is soft, it is an alloy because it reacts with copper and zinc.
White gold