Hong Kong Regulations

TRADE DESCRIPTIONS (MARKING) (GOLD AND GOLD ALLOY) ORDER - PARAGRAPH 5

Articles of differing fineness

(1) Subject to sub-paragraph (3), where an article mentioned in paragraph 4
consists of different parts which are of different finenesses of gold or gold
alloy, then either-

   (a)  each part shall be marked as if it were a separate article; or

   (b)  one mark shall be affixed which shall be that of the fineness of the
        article as a whole.

(2) Where an article mentioned in paragraph 4 consists of different parts one
or more of which are of gold or gold alloy and another or other of which are
of another metal, the part or parts which are of gold or gold alloy shall be
marked under paragraph 4 and the other part or parts shall be described in the
invoice or receipt supplied under paragraph 6.

(3) Where-

   (a)  in the case of an article the main body of which is of Chuk Kam
        standard, the solder used is of a fineness of not less than 800;

   (b)  in the case of an article the main body of which is of a 916.6
        standard, the solder used is of a fineness of not less than 750;

   (c)  in the case of filigree work or a watch case, the main body of which
        is of a 750 standard, the solder used is of a fineness of not less
        than 740;

   (d)  in the case of a white gold article the main body of which is of a 750
        or 585 standard, the solder used is of a fineness of not less than
        500, and if the solder constitutes not more than 5 per cent of the
        finished article, the finished article may be marked with the
        standard of fineness of the main body.