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Colored gold is the name given to any gold that has been treated using techniques to change its natural color. Pure gold is slightly reddish yellow in color, [1] but colored gold can come in a variety of different colors by alloying it with different elements. Colored golds can be classified in three groups: [2] Alloys with silver and copper in ...
Gold is a chemical element with the symbol Au (from the Latin word aurum) and the atomic number 79. In its pure form, it is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal, a group 11 element, and one of the noble metals.
A watch made from gold-filled metal. Gold-filled jewelry is jewelry composed of a solid layer of gold (typically constituting at least 5% of the item's total weight) mechanically bonded to a base of either sterling silver or some base metal. The related terms "rolled gold plate" and "gold overlay" may legally be used in some contexts if the ...
Electrum. Electrum is a naturally occurring alloy of gold and silver, [1] [2] with trace amounts of copper and other metals. Its color ranges from pale to bright yellow, depending on the proportions of gold and silver. It has been produced artificially and is also known as "green gold".
The fineness of a precious metal object (coin, bar, jewelry, etc.) represents the weight of fine metal therein, in proportion to the total weight which includes alloying base metals and any impurities. Alloy metals are added to increase hardness and durability of coins and jewelry, alter colors, decrease the cost per weight, or avoid the cost ...
Sterling dish, filigree work. Citrine cannetille-work brooch. Filigree (also less commonly spelled filagree, and formerly written filigrann or filigrene) [citation needed] is a form of intricate metalwork used in jewellery and other small forms of metalwork . In jewellery, it is usually of gold and silver, made with tiny beads or twisted ...
speidel .com. Speidel is a manufacturer of watchbands and related items based in East Providence, Rhode Island, United States. It was originally founded in Germany by Friedrich Speidel in 1867 as a manufacturer of gold and silver chains. The Speidel Chain Company was formed in its modern state in the United States in 1904.
Balfour. Balfour is an American producer of high school, college, military, and championship rings, as well as yearbooks, caps and gowns, and graduation announcements. Founded in 1913 as the L. G. Balfour Company, Balfour is an operating unit of Commemorative Brands, Inc., a subsidiary of American Achievement Corporation.
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