Jewelry making manual
Clear, easy-to-follow descriptions of basic and advanced techniques, principles of good design, new developments.The proportion of precious metal in an alloy is now measured in parts per thousand by weight Previously, the number ... If the alfoy is below the minimum standard of fineness shown for that particular precious metal, then not only will it not be hallmarked but it will be returned as scrap. ... Hallmarks stamped on articles imported into the UK are completely different to those stamped on British- made articlesanbsp;...
| Title | : | Jewelry making manual |
| Author | : | Sylvia Wicks |
| Publisher | : | Brynmorgen Pr - 1990-09-01 |
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