Cardiff Diamonds is a unique Welsh brand. Based in the heart of the capital our aim is to provide a one-of-a-kind customer service.
We have a wide product range in our Cardiff showroom, with an exceptional collection of diamonds and coloured gems to whet your appetite. 
We also offer a bespoke service to provide you with the perfect jewellery to suit your personal tastes and requirements.

With over 20 years trading experience, the scope of our expertise has positioned Maxx group to be one of the leading providers in the UK.
Our range of services includes Safe Deposit storage facilities, gold and silver bullion and coin investments, luxury watch brands, as well as pre-owned tech sales and purchasing.

Our ambition is to continue to evolve within our industry, delivering a diverse range of products and services with discretion, professionalism, and a commitment to deliver a premium quality customer care.

If you are unable to travel into Cardiff you can purchase items online, or even arrange to visit one of our other stores to view items prior to purchase. 

If there is something you would like to ask us, or you need assistance, please give us a call on 02920 470506 or email

Free Delivery
We deliver free of charge within the UK.
With delivery in around 14 days we are quicker than others in the industry.
We will keep you in the loop about what is happening throughout the process with regular updates from a member of our team. 

Free Storage
We are able to securely store your items in a Safe Deposit facility until you are ready to receive them.

Lifetime Storage
Buying a diamond item? Enjoy lifetime storage at either Cardiff Safe Deposit or Swansea Safe Deposit.

Free Resize
We offer free resizing on all of our rings, and we will resize your ring any time, free of charge. Just call us to arrange it for you.
(Free resizing up to two sizes +/-) 

Free Clean & Polish
We will clean and polish your rings for free anytime you need. 

You can pay online, in person or over the phone.
For convenience we can arrange a 12-week payment plan for you so you can spread the cost over time. No additional fee & no hidden costs. We also accept a variety of payment methods.