G.F. Williams is a second generation family business based in historic Hatton Garden, London and has been trading for over 40 years. We are dedicated suppliers of coloured gemstones. Our clients range from international brand names to bespoke designers, students and collectors. All of our employees are Gem-A qualified gemmologists. Our experience is unparalleled in the industry. We offer an extensive range of higher range stones, which are available from stock. For more information please visit our website.