GOLD - making of Jewellery
Details of what is gold and how or why Gold Jewelry is made in different Karats: The gold used in jewelry contains alloys. Various karat weights, including 10k, 14k, 18k and 22k, contain part zinc, copper, silver, or palladium. 18K gold is 750 percent pure, with 250 alloys added. Gold: Gold is a type of Precious metal whose chemical symbol is AU Temperature: The melting temperature of Gold is slightly lower than that of copper at 1945 ° F or 1063 ° C ( Iron is 2802°F and Copper is 1981°F ) Specific Gravity: of gold is 19.32 Density: One cubic inch of pure gold weighs 10.18 troy ounces. Weight: Gold for Jewelry purposes is weighed in Grams, Pennyweight (DWT) or Ounces (troy) 1 Troy ounce is equal to 31.10348 grams or 20 DWT (pennyweight) 1 DWT (pennyweight) is equal to 1.555 grams or 0.05 troy ounces. Karat: The most popular jewelry made in gold is 10 karat,14 karat, 18 karat and 22 karat gold Jewelry. Purity: The purest form of Gold considered 24 karats is equal...