precious-metal plating
31Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …
32Cloisonné — Ming Dynasty cloisonné enamel bowl, using nine colors of enamel …
33Coinage metals — The coinage metals comprise, at minimum, those metallic chemical elements which have historically been used as components in alloys used to mint coins. The term is not perfectly defined, however, since a number of metals have been used to make… …
34Filigree — For the concrete system, see Filigree concrete. sterling Horse and Buggy, Filigree work …
35Metals conservation — The bronze apoxyomenos, ,dated between 1st and 2nd century BC,found and recovered from Adriatic sea near small island Vele Oryule,near island Loshiny, example of archaeological metals conservation, Croatia Metals conservation, or more precisely… …
36Body piercing — For other uses, see Piercing (disambiguation). Nipple piercings, vertical labret piercing and stretched ears Body piercing, a form of body modification, is the practice of puncturing or cutting a part of the human body, creating an opening in… …
37Crown (headgear) — The Imperial State Crown of Great Britain, Tower of London. It incorporates the Black Prince s Ruby , a 140 ct. Badakhshan spinel. This image of the crown was taken prior to the 1953 coronation, when the crown was modified for Queen Elizabeth II …
38Crown gold — is a 22 karat (kt) gold alloy, introduced in England for gold crown coin manufacture in 1526 (by Henry VIII). It is 22/24 = 0.91667 fine or 91.667% gold. Previously, gold sovereign coins were made from 23 kt gold, but this was soft and invited… …
39Casting (metalworking) — Casting iron in a sand mold In metalworking, casting involves pouring liquid metal into a mold, which contains a hollow cavity of the desired shape, and then allowing it to cool and solidify. The solidified part is also known as a casting, which… …
40Brass — For other uses, see Brass (disambiguation). Brass die, along with zinc and copper samples. Brass is an alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties.[1] In …
