What is white gold (can Au be white)?

Answer 1

pllatinum is not white gold. The pure element Au is not white gold.

White gold is an alloy of gold mixed with white metals such as nickel, silver, and palladium. Like yellow gold, white gold glitters in a variety of carats: 18ct, 14ct, or 9ct.

Eighteen-carat white gold consists of 75% gold mixed with 25% white metals. New white gold rings are usually coated with a hard protective finish of rhodium, a silver-white metal like platinum. To keep a white gold ring looking its best, Gillett's recommends an annual replating of rhodium, since the coating wears off over time.

Platinum, an entirely different element than gold, is a white metal that is denser, heavier, and longer-wearing than gold. It's usually used in almost pure form and does not require a protective coating. Platinum is quite expensive, a platinum ring is perhaps twice the price of a similar ring made in white gold.

Answer 2

Pure Au can not be white.

But it's possible to have "White Gold", "Red Gold" as well as "Blue Gold" and many more, created mainly for the jewellery industry. See the website suggested.

Answer 3

oh, sorry, it's not platinum. i did a little research on wikipedia and this i quote:
"White gold refers to an alloy of gold and other white metals such as silver, palladium, or nickel. The natural colour of white gold is light grey and slightly yellow, so jewelry made of white gold is typically coated in highly reflective rhodium (sometimes coated in platinum and palladium), adding a more brilliant shine. Palladium and silver alloys are of higher quality than nickel and are sometimes not coated with rhodium. The purpose of plating is to add lustre to greyer jewelry, as well as to prevent oxidation of some of the metals found in the alloys. White gold is not platinum, but is used as a cheaper alternative, usually costing one-third as much as platinum."
you can read the whole article at : http://en.wikipedia.org/wiki/White_gold

hope it helped, man =)

Answer 4

white

Answer 5

it's gold with a high platinum content (gold is only pure if it's refined, otherwise there are other metals mixed in). the platinum causes it to lighten in colour appearing white.

there's also green gold (high copper content), black gold (high iron content), red gold (iron again, with - I think - manganese). plus plain old yellow gold.

gold is generally dull in colour, unless there's a high in silver content as well, then it's shiny.

Answer 6

It's not platinum, sheesh. The color is determined by mineral impurites, making red & white gold. 24K will always be yellow.