About Us


Nestling in the heart of Birmingham’s prestigious Jewellery Quarter, GM Colours recently expanded its operations in order to create The Gem Studio, a modern consultation lounge and showroom providing a private, relaxing and inspirational atmosphere for visiting clients. It is here that we are available to take trade enquiries for the supply or matching of coloured gemstones and diamonds. We also provide a design service for jewellers and the general public. Whatever your requirements our designers will work together with you to create your vision. 3D technology is available to ensure that we capture and produce your own unique design. Please use our contact form or call directly to make an appointment with one of our consultants.


50 years of collective experience in traditional and antique methods of jewellery design and manufacturing are at hand to guide and advise you throughout the creative process. A repair and reconstruction service is also available for damaged or lost jewellery items. Insurance work is also undertaken.


Our Premises

The Argent Centre is an historic Grade II listed building in the centre of Birmingham’s world famous Jewellery quarter. It’s side street and alley ways are a warren of small workshops occupied by skilled craftsmen, using traditional methods and tools.


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