Some wedding and engagement bands are made of an alloy called yellow gold. The metals color depends on the kind and quantity of metal added to on to it. The lustrous hue of 18k gold, used in rings, is due to the small large percentage of gold compared to other metals (75% gold, 25% other alloys). Stronger yet less “golden” in color, 14k gold is composed of almost 60% gold and about 40% other metals. This kind of gold is for earring backs or clasps.
White gold jewelry is fast becoming a favorite among younger brides. In reality, however, there is no such thing as white gold. 18k or 14k gold, depending on the alloy, comes in a shiny yellowish white color. Copper gives the gold a reddish hue, whereas nickel, palladium, platinum, zinc and silver help lighten the color to make it appear whitish. The whiteness is simply enhanced by coating or plating the metal with a thin film of rhodium.
The use of nickel and palladium as gold alloys has made it possible for two kinds of white golds to enter the market: nickel whites, which give off a cold-toned white hue and are somewhat difficult to process; and the softer and more malleable warm-hued palladium whites. |