White gold

MFA Acc. #: 2006.372

Description

A gold alloy that is whiter and tougher than pure gold. White gold is malleable, but must be worked evenly or it may crack. It is used as a substitute for platinum in jewelry, gilding, and decoration. Some compositions for white gold are:

- Gold (18k) with 25% platinum (Untracht 1968)

- Gold (18k) with 25% palladium (soft white)

- Gold (18K) with 3.7% copper, 16.3% nickel, and 5% zinc (hard white)

- Gold (18K) with 10-12% palladium, 8-10% nickel, and 2-9% zinc (Untracht 1968, Lewis 1993, Brady 1971, Hawley 1981)

- Gold (14K) with 22.5% copper, 12% nickel, and 7% zinc

- Gold (10K) with 59% nickel (Lewis 1993)

- Gold (9K) with 28% copper, 17.5% nickel, 17% zinc (Brady 1971)

- Gold with 20-50% nickel (Brady 1971)

Some formulations of white gold, particularly those made with nickel, are coated with rhodium to increase their luster.

Synonyms and Related Terms

Weigold (Deut.); ouro branco (Port.)

Additional Information

O. Untracht, Metal Techniques for Craftsmen, Doubleday and Co., Garden City, NY, 1968. G.S.Brady, Materials Handbook, 10th edition, McGraw-Hill, New York, 1971. World Gold Council: Link

Authority

• Matt Roberts, Don Etherington, Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982

• A History of Technology, Charles Singer, E.J. Holmyard, A.R. Hall (eds.), Clarendon Press, Oxford, Volume 1: From Early times to Fall of Ancient Empires, 1954

• Oppi Untracht, Oppi Untracht, Metal Techniques for Craftsmen, Doubleday & Company, Garden City, 1968

• Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/White_gold (accessed Jan 2005)

• Thomas Gregory, Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942

• G.S.Brady, G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 870

• Richard S. Lewis, Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993

• Random House, Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997

• The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998