How do I read a London gold hallmark?

A London gold hallmark typically consists of a leopard's head symbol indicating the London assay office, a numerical standard mark such as 375 for 9ct or 750 for 18ct, and a specific date letter. Additional marks include a sponsor's mark identifying the maker or retailer, and sometimes a purity symbol like a crown for gold.

What is the difference between 9ct and 18ct gold?

Eighteen-carat gold contains a higher proportion of pure gold mixed with alloy metals compared to nine-carat gold, resulting in a richer colour and greater intrinsic value. Nine-carat gold offers increased durability against daily wear, making it common for functional items like signet rings and everyday bands.

How should I care for antique gold jewellery?

Antique gold items require gentle cleaning with a soft cloth and warm soapy water, avoiding harsh chemical dips that can damage softer gemstones or pearls. Stored pieces benefit from individual soft pouches to prevent scratching between items, particularly when pearls or delicate onyx elements are present.

How can I date pieces without a clear hallmark?

Dating relies on stylistic clues such as setting techniques, gemstone cuts like old mine or rose cuts, and overall manufacturing motifs characteristic of Victorian, Edwardian, or mid-century design. Comparative analysis with documented pieces from known makers also assists in establishing an approximate period of origin.

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London Hallmark Gold

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London hallmark gold items comprise jewellery, decorative objects, and accessories bearing official assay office marks from the capital, prized for verified precious metal standards.

Victorian Ring Ruby Old Cut Dimond 18ct Gold London 1891 Antique Five Stone Ring

19th century

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Victorian Ring Ruby Old Cut Dimond 18ct Gold London 1891 Antique Five Stone Ring

From The Chelsea Bijouterie Ltd

£1,590

3+ MONTHS AGO

jewellery

A Gold and Diamond Cartier Cigarette Case Made in London 1947

1920 - 1940

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A Gold and Diamond Cartier Cigarette Case Made in London 1947

From Sandbanks Antiques

£4,950

3+ MONTHS AGO

metal

An Elegant Cartier London Round Gold Box 1945

1920 - 1940

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An Elegant Cartier London Round Gold Box 1945

From Sandbanks Antiques

£1,950

3+ MONTHS AGO

metal

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London Hallmark Gold

Victorian Ring Ruby Old Cut Dimond 18ct Gold London 1891 Antique Five Stone Ring

A Gold and Diamond Cartier Cigarette Case Made in London 1947

An Elegant Cartier London Round Gold Box 1945

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