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Specialist Gemstone suppliers, Sapphire, Ruby, Emerald, Agate, Amethyst, Aquamarine, Beryl, Chrysoberyl, Citrine, Emerald, Fire opal, Garnet, Moonstone, Morganite, Opal, Peridot, Quartz, Rubelite, Ruby, Sapphire, Tanzanite, Topaz, Tourmaline, Tsavorite

About GF Williams & Co Ltd.

GF Williams & Co Ltd. is a highly respected and experienced wholesaler of coloured gemstones, pearls and diamonds.

With over 100 years’ combined experience of the gemstone industry within the team, we have been supplying gemstones to our global client base for over 50 years.

With a vast inventory of gemstones, diamonds and pearls  available in a broad variety of colours, G.F. Williams supplies a host of clients, from major jewellery manufacturers and gemstone collectors, to students and jewellery designers, as well as individuals looking to create a bespoke piece of jewellery.

The G.F. Williams team  are committed to using our knowledge and expertise to helping you find the gemstones you are after, whether you are searching by type, colour or value.

Company History

G.F. Williams & Co. was founded in 1962 by Geoffrey Williams, who entered the gemstone trade in the early 1960s, working for a gemstone dealing company in London’s famous Hatton Garden. The 1960s saw significant growth in jewellery manufacture, with new production techniques requiring consistent sizes and qualities in large volumes. This, combined with close relationships with European gem cutting companies, helped develop the precision cutting of gemstones. It was this development within the gemstone industry that gave Geoffrey Williams the idea for G.F. Williams & Co., to source high quality gemstones for this new market.

Established in 1962, G.F. Williams has been trading for over 50 years and gone on to become a second generation family business. Now managed by Geoffrey’s son, Jason Williams, the G.F. Williams team remains committed to the supply of high quality gemstones, diamonds and pearls.

The Team

Our team of qualified gemmologists boasts a combined experience of over 100 years in the jewellery and gemstone industry. We use our wealth of knowledge and expertise to guide and advise our clients when it comes to finding the right gemstone, diamond or pearl for their needs.

What we do:

G.F. Williams is a dedicated gemstone wholesaler supplying high quality coloured gemstones, diamonds and pearls.

A second generation family business that has traded successfully for over 50 years, G.F. Williams offers a professional and reliable service, tailored to providing the perfect gemstones to meet our customers’ exacting requirements.

G.F. Williams’ team of qualified gemmologists provide unparalleled gemstone knowledge and expertise to our clients, who range from international brand name jewellers, jewellery designers and students, to collectors and individuals looking to create a bespoke piece of jewellery.

We offer an extensive and varied range of high quality loose gemstones, sourced from across the globe, which can be viewed at our online catalogue and are available from stock in a variety of cuts and carat weights.

Contact our friendly team today about how we can fulfil your gemstone requirements.


We offer the trade products on approbation for 1 month before chasing and payment for invoices within 2 months. If stones have been returned damaged or have been mounted then you will be charged for the stone.


Products will be in the post within 3 days of ordering.

Visiting Stores:

We are open to clients Tuesday-Friday 10-3pm. Due to the pandemic if you can call and give us an ETA then we can make sure we can accommodate you at the time of arrival.



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