Christmas Sale - Get 10% off made-to-order items and 25% off stock items Terms Apply

Christmas Sale - Get 10% off made-to-order items
and 25% off stock items Terms Apply

Order by 5th Dec for Guaranteed Christmas Delivery

Order by 5th Dec for Guaranteed Christmas Delivery

CARDIFFST David’s Dewi Sant
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Welcome to Diamond Heaven’s Cardiff store - where skilled jewellers and diamond enthusiasts collaborate to produce some of the finest jewellery in Cardiff. Located in St David’s Dewi Sant shopping centre, our experts are passionate about creating pieces you’ll treasure forever. Bespoke designs that are masterfully crafted - you can experience the exceptional quality and radiance of our diamond jewellery at our luxury showroom. Want a free design consultation? Book an appointment online to secure your spot or visit us in the city centre, where our team will be happy to assist you.

About Our Cardiff Store

At our Cardiff jewellers, we take great pride in producing lasting, luxurious diamond jewellery. Our expert jewellers meticulously craft each piece to maintain the impeccable quality our customers have come to know and love. Pairing precious stones with classic designs, our enchanting range of rings, necklaces, earrings, and bangles are the perfect choice to add a touch of sparkle to any outfit or occasion.

Ready to pop the question? Our experts are on-hand to help you find an engagement ring that effortlessly encapsulates your unique love story. Book an appointment online and secure a free design consultation with our team.

Upon entering our showroom, our team will warmly welcome you and your party - offering their advice and expertise at your request. Along with viewing our radiant diamonds, you will also be able to try them on at your leisure, to ensure you find the perfect piece for you or your loved one.

The in-store experience

At Diamond Heaven, we understand the care and consideration that goes into buying a piece of diamond jewellery. That’s why our experts are on-hand to guide you through every step of the diamond buying process. From evaluating the 4 Cs, to capturing your personal style – our team will ensure you leave our store satisfied.

Considered one of the finest jewellers in Wales, we believe our store stands out from other chains and retailers! But don't just take our word for it – read reviews from our valued customers, as they share their experience at Diamond Heaven.

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Monday 9.30 am - 6.00 pm

Tuesday 9.30 am - 6.00 pm

Wednesday 9.30 am - 6.00 pm

Thursday 9.30 am - 6.00 pm

Friday 9.30 am - 6.00 pm

Saturday 10.00 am - 6.00 pm

Sunday 11.00 am - 5.00 pm

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Diamond Heaven

Unit 14

St David’s Way


CF10 2DP

Get Directions

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At Diamond Heaven, We offer number of services from bespoke consultation session with a DH expert to aftercare services including

  • Bespoke Design Consultation
  • Resizing
  • Cleaning / Polishing
  • Safety Check
  • Engraving
  • Repairs
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Best sellers in store




Discover our in-store bestsellers, featuring popular designs that don’t age. Crafted with passion and precision, start your search for the perfect piece in our Cardiff jewellery store.

View all Engagement Rings
View all Diamond Rings
View all Wedding Rings
View all Eternity Rings
View all Earrings
View all Pendants
View all Bracelets

Our Current Offers




Discover our jewellery deals at Diamond Heaven. Featuring limited-time promotions, free shipping, and unmatched discounts - don't miss out on our exclusive offers!


Don't miss this incredible opportunity to adorn your love story with the perfect wedding rings. From October 6th to November 30th, you can enjoy substantial savings on your purchase. Enter the promo code IDO200 at checkout to unlock your £200 discount on orders over £1000.


Elevate your love story with our exquisite eternity rings. From October 13th to November 30th, you have the chance to enjoy significant savings on your purchase. Enter promo code FOREVER200 at checkout to claim your £200 discount on orders over £800. Shop now.


Elevate your style with our stunning jewellery collection at Diamond Heaven. From October 27th to November 30th, you can indulge in remarkable savings on your purchase. Don't miss out on this opportunity to add a touch of elegance to your life with our exceptional jewellery. Use the promo code FORYOU100 at checkout to unlock your £100 discount on orders over £500.


Are you ready to take the next step in your relationship? From November 3rd to November 30th, you can make that moment even more special with substantial savings on our captivating engagement rings. This limited-time offer is your chance to make a memorable proposal. Use the promo code SAYYES250 at checkout to unlock your £250 discount on orders over £1500.