SS-EN-ISO-8654 › Jewellery - Colours of gold alloys - Definition, range of colours and designation (ISO 8654:2018)
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ISO 8654:2018 specifies a limited number of colours of gold alloy and the method to measure colours. ISO 8654:2018 applies to objects made of gold alloys or coated by gold alloys.
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SS-EN ISO 8654:2018
April 4, 2018
EN ISO 8654:2018(IDT); ISO 8654:2018(IDT)