Excise duty on jewellery classification updated; items treated as that precious metal when specified weight threshold is met. Amends the excise notification to impose a specified duty on articles of jewellery and parts thereof, adds distinct entries for articles, parts and certain silver articles, and prescribes that an article or part produced from an alloy shall be treated as of a particular precious metal where that metal meets a defined weight-based threshold, with priority given to platinum, then gold, and then silver; input and capital goods credit exclusions apply as indicated.