"Gold is a mixture of gold with Palladium, 12% or 15% nickel, and gold color tends to pink by mixing with 5% silver and 20% copper, color green italic results from mixing 75% gold, 25% silver or zinc + cadmium. The color blue if tilted mixing gold with little iron, if mixing gold with 20% aluminium, the resulting color is purple, and can control the degree of redness gold by lifting or lowering the proportion of copper added "ended.
Said Dr. Mamdouh Abdel Ghafur Hassan in his book "the Kingdom of minerals": "pure gold, not solid enough for the jewelry industry, but mixed with copper or silver or nickel or Platinum to increase its hardness and, at the same time impart distinct colors, the little brass lends it redder in color, either silver, they give it a tinge of whiteness, either increase the proportion to 25% Platinum or nickel to 15% it produces alloy called (white gold)" ended.
Conclusion: Gold is yellow in colour, origin and there went white in origin, but may add the materials change colour to white.
, White gold is yellow gold and Palladium added rather than silver or copper, therefore there are stores for white gold bullets as yellow, and the addition of silver or copper to gold helmed a gold, and does not allow its use, so add the Palladium.
As such, be wearing white gold taboo on men, because in fact it went yellow, but added the article changed its color to white.
The Standing Committee for issuing fatwas was: spread among some people especially men use the so-called white gold and manufactured from watches and rings, pens and the like, and after asking the owners and chiefdoms goldsmiths, vendors reported that white gold is yellow gold, and after adding it to a particular article of around 5-10% to change its color from yellow to white, or other other colors, which makes it similar to other metals, has much use lately, mistaken ruling on use ofA lot of people.
They replied:
"If he actually said, the Gold if mixed with other is its prohibition on differentiable if selling sex, and that kind on board, whether selling sex or sell silver or paper money, and wear it on men, and the prohibition of making pots, and renamed gold white not out on those" end quote.
Fataawa Al-lajnah Al-daa'imah (24/60).
And Allah knows best.