Trinity Three Stone Princess Cut Engagement Ring

The Trinity Engagement Ring dazzles with graduating sizes of Princess cut Diamonds. Flowing effortlessly from a slim, court shaped band, three perfectly matched square Princess cut Diamonds rise in harmony within elegant claw settings. Available in a range of carat weight options, each commission gets meticulously crafted around your requirements and budget—offered in a choice of precious metal options. Our standard Diamond Colour and Clarity (G SI1) ensure whiteness and brilliance from expertly matched Diamonds. Contact us for alternative options for other colour and clarity grades. Each commission takes between three and four weeks—completed with a mirror polish and elegantly boxed in luxury packaging.

UK Ethical Jewellery and Fairtrade Gold

Ethical consumers can now enjoy Fairtrade Gold. We create commissions made from 18ct White Fairtrade Gold or 18ct Yellow Fairtrade Gold. Responsibly sourced and fully traceable, Fairtrade Gold gives UK clients the reassurance that their purchase has helped the lives of impoverished, small-scale artisanal miners in areas such as Peru. Miners receive a fair price for the gold they produce and a premium per kilogram, which benefits the development of their community. 

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

This ring design is available with a lab-grown diamond. 

Learn more about lab-grown diamonds  

This ring design is now available with a lab-grown diamond. Please contact us noting your design preference for a detailed quote set with a lab-created diamond. Please note that our lab-grown diamond engagement rings are identical in appearance and quality to our natural diamond options with a difference in cost working out to between 50% - 75% less than our natural diamond equivalent rings. Our lab-grown diamonds are typically available in higher colour clarity and cut grades and include full certification as shown below. 

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. 

Photograph of our engagement ring packaging for clients across the UK. Engagement rings arrive in luxurious packaging with a presentation box and pocket box conveniently sized to hold the engagement ring for a surprise proposal. 

Buy with Confidence UK 

For your total reassurance, Serendipity Diamonds is listed with Buy with Confidence and offers 100% reassurance and satisfaction.

UK Buyers benefit from 60 days returns on most items, a lifetime warranty free size adjustments and competitive prices (50 - 70% below high street prices).

We source diamonds directly from diamond cutters located across the World. In addition, we handcraft all rings in our workshops until completed. The result is exceptional value for money with all of the benefits of luxury—the complete package.

Read more about us online. Besides our diamonds, enjoy the reassurance of natural, beautifully cut and responsibly sourced pink sapphires, blue sapphires, rubies and emeralds for our gemstone collection of engagement rings.

View more examples in our diamond engagement rings collection



Interactive diamond sizes - see how your diamond sizes appear on the hand

Select your chosen diamond shape and carat weight and see how big it looks on the finger. Our handy tool is designed to help you judge diamond size across a variety of diamond shapes.