发明名称 PRECIOUS METAL COMPOSITION AND ARTIFACTS MADE THEREFROM
摘要 <p>A decorative artifact made of a precious metal composition is disclosed in which the hardness of the composition is at least 600 on the Vickers scale. The artifact preferably has a precious metal content complying with hallmarking standards and the surface of the artifact may be polished and optionally faceted.</p>
申请公布号 WO1997015694(A1) 申请公布日期 1997.05.01
申请号 NL1996000420 申请日期 1996.10.28
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