Abstract: A silver-colored, tarnish-resistant, corrosion-resistant alloy is provided. The alloy includes 92.5–95% silver, combined with a master alloy of 24–34% zinc; 60–74% copper; 0.5–1.8% silicon; 0.0–8.0% tin, or 0.0–1.5% indium, wherein percentages are in terms of weight. The alloy can be used for jewelry items, tableware items, dental items or other items that should resist tarnishing or corrosion and which require a non-brittle alloy.

Abstract: A silver-colored, tarnish-resistant, corrosion-resistant alloy is provided. The alloy includes 92.5-95% silver, combined with a master alloy of 24-34% zinc; 60-74% copper; 0.5-1.8% silicon; 0.0-8.0% tin, or 0.0-1.5% indium, wherein percentages are in terms of weight. The alloy can be used for jewelry items, tableware items, dental items or other items that should resist tarnishing or corrosion and which require a non-brittle alloy.

Abstract: A silver colored alloy, highly tarnish resistant, corrosion resistant and brittleness free is provided. The alloy includes 90% to 94% by weight silver, 3.50% to 7.35% by weight zinc, 1% to 3% by weight copper, and 0.1% to 2.5% by weight silicon. The alloy is suitable for rings, earrings, bangles and other jewelry.

Abstract: A silver colored alloy highly tarnish resistant, sterling silver is provided or having included therein: 90% to 92.5% by weight Silver; 5.75% to 7.5% by weight Zinc; 0.25% to less than 1% by weight Copper; 0.25% to 0.5% by weight Nickel; 0.1% to 0.25% by weight Silicon; and 0.0% to 0.5% by weight Indium.

Abstract: In accordance with this invention, a gold colored tarnish and corrosive resistant alloy is provided which includes the following: 6 to 20 percent by weight gold, 5 to 10 percent by weight of indium, 5 to 12 percent by weight of palladium, 23 to 40 percent copper, 5 to 10 percent by weight zinc, and 23 to 40 percent by weight silver. It has been found that the aforesaid alloys are sufficiently malleable to be rolled or stamped without fracturing.

Abstract: A silver colored metal alloy having improved tarnish resistance is disclosed, which is intended primarily for solid sterling jewelry and utensils and may also be used in silver plating, and does not easily tarnish and corrode. The alloy consists essentially of 80% to 92.5% silver, 4% to 9% palladium, 0% to 10% copper and 0.5% to 1% indium or zinc.

Abstract: The present invention provides an improved casting alloy for use in costume jewelry and jewelry samples. In accordance with the present invention, a gold colored metal alloy is disclosed which is tarnish resistant and consists of the following ingredients such as, 75 to 85% copper, 5 to 15% nickel, 0 to 12% indium, and 0 to 12% zinc. It is also desirable to add approximately 0.01% iron and/or 0.05% silicon to act as a grain refiner and fluidity enhancer respectively. The alloy in accordance with the subject invention is a rich gold color which approximates a fourteen carat alloy. In addition, tarnish resistance and workability is greatly increased.

Abstract: A gold colored, tarnish and corrosion resistant alloy is disclosed, usable for jewelry, dental purposes and the like. The alloy consists essentially of 24 to 27 percent palladium, 19 to 22 percent indium, 5 to 30 percent copper, 1 to 20 percent gold, and the balance is essentially silver.

Abstract: A gold colored, tarnish and corrosion resistant gold free alloy is disclosed, usable for jewelry, dental purposes and the like. The alloy consists essentially of 24 to 27 percent palladium, 19 to 22 percent indium, 5 to 30 percent copper, and the balance is essentially silver.

Abstract: A gold colored, tarnish and corrosion resistant copper free allow is disclosed usable for jewelry, dental purposes and the like. The alloy consists essentially of 8 to 20 percent Gold, 22 to 26 percent Indium, 22 to 28 percent Palladium, and the balance is essentially Silver.

Abstract: A gold-colored, acid and corrosion resistant alloy is disclosed, usable for jewelry, dental purposes and the like. The alloy consists essentially of 15 to 20 weight percent of indium, 7 to 20 weight percent of copper, 5 to 15 weight percent of palladium, and from 0 to 10 weight percent of gold, with the balance consisting essentially of silver and optionally minor amounts of ingredients such as oxide scavengers and the like.