Yellow Gold melting point 1,063.0°C
A soft, yellow, corrosion-resistant element, the most malleable and ductile metal, occurring in veins and alluvial deposits and recovered by mining or by panning or sluicing. A good thermal and electrical conductor, gold is generally alloyed to increase its strength, and it is used as an international monetary standard, in jewelry, for decoration, and as a plated coating on a wide variety of electrical and mechanical components.
A relatively soft metal, gold is usually hardened by alloying with copper, silver, or other metals. White gold, a substitute for platinum, is an alloy of gold with platinum, palladium, nickel, or nickel and zinc. Green gold, also used by jewelers, is usually an alloy of gold with silver. Alloys of gold with copper are a reddish yellow and are used for coinage and jewelry. Gold is often found in nature alloyed with other metals; when more than 20% of silver is present the alloy is called electrum.
The gold content of an alloy is commonly stated in carats, a carat being 1/24 part by weight of the total mass. Pure gold is therefore 24 carats fine; an alloy that is 75% gold is 18 carats fine. Fineness is sometimes expressed in terms of parts per thousand; thus gold containing 10% of other metals is said to have a fineness of 900.
Quick Chart on Gold:
· 999 fine, essentially pure gold.
· 990 fine, or 24 carat gold.
· 916 fine, or 22-carat gold.
· 750 fine, or 18 carat gold.
· 585 fine, or 14 carat gold.
· 375 fine, or 9 carat gold.
Cleaning Gold - Use any jewelry cleaner that is gold jewelry specific. Also warm water and facial soap. Tap dry with cotton cloth. Do not air-dry. High powered steaming okay. Periodic polishings on polishing wheel is acceptable.
Please Note - The buffing/polishing wheel will remove metal so please be careful. Only buff your jewelry when it is absolutely neccesary. Over buffing will thin out your rings, bracelets, necklaces, watch bands and anything else that the wheel comes in contact with.
White Gold melting point 1,063.0°C
An alloy of gold and nickel, sometimes also containing palladium or zinc, having a pale platinumlike color.
White gold refers to an alloy of gold and other white metals such as silver, palladium, or nickel. The natural color of white gold is light gray, 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 luster to grayer jewlery, 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.
Some people (about 12.5%) are sensitive or allergic to white gold. This occurs because of reaction to nickel found in some alloys of white gold. Reactions are mild and only involve rashes on the skin.
Typically, white gold is plated with only a layer of Rhodium 0.05 to 0.5 micrometres thick. Because of this thin plating, cracks will form causing oxides to form. This will weaken the Rhodium coating even more. A good idea is to plate with about 2.0 micrometres of Rhodium, for longer lasting and more durable jewlery. Replating can be done at any local jeweler.
Cleaning White gold - Use any liquid jewelry cleaner that is gold jewelry specific. Also warm water and facial soap. Tap dry with cotton cloth. Do not air-dry. High powered steaming okay. Avoid polishing wheels and polishing cloths. They will remove the plating faster. Yearly buffing and replating acceptable.
Please Note - The buffing/polishing wheel will remove metal so please be careful. Only buff your jewelry when it is absolutely neccesary. Over buffing will thin out your rings, bracelets, necklaces, watch bands and anything else that the wheel comes in contact with.
Rose Gold (pink gold) melting point 1,063.0°C
Rose gold is an alloy of gold and copper.
Rose gold refers to an alloy of gold and copper. The natural color of rose gold is reddish yellow or pinkish.
Cleaning Rose gold - Use any jewelry cleaner that is gold jewelry specific. Also warm water and facial soap. Tap dry with cotton cloth. Do not air-dry. High powered steaming okay. Periodic polishings on polishing wheel is acceptable.
Please Note - The buffing/polishing wheel will remove metal so please be careful. Only buff your jewelry when it is absolutely neccesary. Over buffing will thin out your rings, bracelets, necklaces, watch bands and anything else that the wheel comes in contact with.
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