On jewelry, "585" is a measure of gold's purity and indicates that the piece is made from 14-karat gold. This number is derived from the percentage of pure gold expressed as parts per 1,000. This system of certification is widely used in Europe.Continue Reading
Gold that is 14 karat is 58.3 percent pure. The figure is rounded up and expressed as parts per 1,000 giving 585 as the measurement. Gold that is 75 percent pure is described as 18-karat gold and is denoted as 750 in European hallmarking.
In the United States, the purity of gold is measured using the karat system. Pure gold is 24 karat, and this is the standard against which purity is measured. Gold that is 14 parts pure gold and 10 parts other metals is 14-karat gold.Learn more about Jewelry & Watches
White gold, especially in some jewelry pieces, may turn yellow over time when its rhodium plating gradually wears off. Rhodium plating is the preferred plating method used on most white gold rings because it is a pure white metal. This property of rhodium gives white gold jewelry a much whiter appearance and a more brilliant sheen.Full Answer >
To clean tarnished white gold, gather a bowl, mild dish soap, warm water, baking soda, a soft toothbrush, and a microfiber towel or jewelry polishing cloth. Soak the white gold item in soap and water, apply baking soda, rub the gold with a toothbrush, rinse the item, and then dry it. If the tarnish remains, use a professional jewelry cleanser.Full Answer >
To read jewelry markings, also known as hallmarks, use a jeweler's scope to magnify the information, cross-reference the writing with a hallmark database, and note any writing that may indicate metal's purity or year of manufacture. Common hallmarks include purity marks, which indicate the percentage of precious metal; maker's marks, which identify the jeweler who made the piece; and town marks, which indicate the location of fabrication of a piece.Full Answer >
Gold is used to make jewelry because of the attractiveness of its luster and because of its rarity. It also doesn't tarnish and doesn't react with air the way a metal like iron does. Gold is malleable, which means it can be beaten into very thin sheets. It's also ductile, which means it can be stretched out into thin wire as in the findings of earrings.Full Answer >