Welcome to GF Williams & Co.

Suppliers of high quality coloured gemstones, diamonds and pearls since 1962.


Our clients range from international brand names to designers, students and collectors.

We offer an extensive range of higher range stones, which are available from stock.

We employ Gem-A qualified gemmologists our experience is unparalleled in the industry.

To discuss your requirements please call or feel free to browse the online catalogue.

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The stones displayed here are just a small portion of the range we offer.
Calibrated stones are available in most common shapes andsizes.

To discuss your requirements please call or feel free to browse our online catalogue.

Pink Sapphire

Sapphires may be most widely known for their classic blue colour. However this beautiful gemstone is available in a wide spectrum ...

Sapphire, Birthstone of September

Those born in September have the pleasure of calling Sapphire their Birthstone. When hearing the word Sapphire it’s unsurprising that ...

Spotlight on Paraiba Tourmaline

We're currently in the process of organising our stock in preparation for the IJL. If you attended last year ...

Journey into the gemstone trade: The infamous Hatton Garden

The infamous Hatton Garden, a bustling little jewellery hub and the epicentre of London’s jewellery trade. Numerous hidden workshops ...