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https://www.thoughtco.com/composition-of-gold-alloys-608016
Dec 08, 2019 · Color of Gold: Alloy Composition: Yellow Gold (22K) Gold 91.67% Silver 5% Copper 2% Zinc 1.33%: Red Gold (18K) Gold 75% Copper 25%: Rose Gold (18K) Gold 75% Copper 22.25% Silver 2.75%: Pink Gold (18K) Gold 75% Copper 20% Silver 5%: White Gold (18K) Gold 75% Platinum or Palladium 25%: White Gold (18K) Gold 75% Palladium 10% Nickel 10% Zinc 5%: Gray-White Gold …Estimated Reading Time: 1 min
https://www.callagold.com/education/gold-jewelry-alloys/
Mar 11, 2019 · What Alloy Metals are in White Gold and Palladium Alloy Jewelry? 14kt White Gold - Palladium Alloy 58.33% pure yellow gold (AU) 32.17% silver (Ag) 9.50% palladium (Pd) 18kt White Gold - Palladium Alloy 75% pure yellow gold (AU) 25% palladium or platinum. Information from Innovateus.com. Yellow Gold for Jewelry MakingReviews: 66
https://www.gold.org/about-gold/about-gold-jewellery
White gold compositions listed here are nickel free. Nickel-containing white gold alloys form a small/very small percentage of white gold alloys and generally contain other base metals such as copper and zinc. The following are the common standards of fineness that are used:.375 = 9 carat (England and Canada).417 = 10 carat.583 (.585) = 14 carat
https://www.totalmateria.com/page.aspx?ID=CheckArticle&site=ktn&NM=230
At the 9 carat (37.5% gold) level, a gold-silver alloy is quite white, ductile although soft and is used for jewelry purposes. White golds are available up to 21 carat. The addition of palladium to gold increases its melting point, modulus of elasticity, strength and hardness.
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