Tension Set Diamond Solitaire Engagement Ring

This beautiful Round Brilliant cut Diamond solitaire Engagement Ring shows off the fire of your chosen Diamond to full effect. The Cassie Engagement Ring features a tension styled setting. Open, sleek and modern in appearance. With a sensible setting height, the court profile provides a very comfortable fit, and most Diamond choices are available with full certification and a very good cut grade. 

Choose from a wide selection of Diamond options, combined with a choice of precious metals including 18ct White Gold, 18ct Yellow Gold, 18ct Rose Gold, Platinum, and Palladium. Enjoy a lifetime warranty and 60 days returns on all purchases, beautifully presented in pristine Serendipity Diamonds packaging. We handcraft your chosen ring by hand, so please allow four weeks for this Engagement Ring before it arrives by secure courier at your door.

How does my engagement ring arrive?

Within the United Kingdom, each completed ring from our extensive diamond engagement ring collection is beautifully packaged and sent by International Signed For Delivery, by Royal Mail. We insure all parcels until they arrive with you. 

Deliveries arrive the next day after despatch. All parcels arrive under plain wrapping. Inside you will discover a sturdy outer box containing a document section with a document folder for valuations and certification. Your engagement ring will arrive inside a presentation box, accompanied by our handy pocket sized ring box. 

Read more about packaging and delivery. 

We believe that presentation is an important part of your experience with us. For this reason, we created incredible packaging as shown in our video below. 

How to order your engagement ring

Please feel free to order online or contact our showroom to order in person. If you place your order online, we will email you an invoice and then advise you on payment options. Owing to the high level of card fraud, we handle all payments individually and welcome deposit payments before we start any work. 

Choose either a natural or lab-grown diamond

This ring design is now available to order online of with us in person, with a lab-grown diamond. Just select the lab-grown diamond option. By default we work with fully certified, F colour VS1 clarity ethical lab-grown diamonds as a minimum grade. Please contact us for alternative diamond specifications. All lab-grown diamonds will have a minimum cut grade of very good or excellent as part of your purchase. 

Example of a lab-created diamond with certificate.

Diamond grading you can trust

Trust in reputable diamond certification from GIA (Gemological Institute of America) and IGI (International Gemmological Institute). Our diamonds achieve a minimum of a VERY GOOD CUT. This ensures maximum brilliance from your diamond. We can provide Excellent cut diamonds upon request.

Get help with the perfect size.

Get help finding out the perfect ring size with our ring size service available with any ring purchase from Serendipity Diamonds. 

Find your finger size

Do you need guidance?

Get in touch for friendly, helpful guidance on regular engagement rings and our bespoke design service. We offer free, impartial advice on all aspects of your purchase, from diamond grading and precious metals to finance. 

Contact us today

Mount only and Starlight Moissanite ring options

We now provide most of our ring styles in two further choices. Firstly, we create finished ring mounts available for your own diamonds or gemstones. In addition, we provide a range of add-on services, including stone setting and inward insurance, to cover items sent to us for setting. 

Also, we offer most of our engagement rings with Moissanite instead of a diamond. This provides an ethical and affordable alternative to a natural or lab-grown diamond (also available) available across most of our ring styles. Look for the Starlight Moissanite or mount-only tabs, or contact us for a personal quote on any ring design.