Celebrate with the Sonnet Asscher Cut Solitaire Engagement Ring

The Sonnet engagement ring perfectly defines the Asscher cut's outline and geometric beauty. This square Emerald cut style possesses subtle stepped facets combined with polished corners. The design is distinctively simple with four sculptured claws in a choice of precious metal options. Choose from Fairtrade or regular 18ct Gold in white, yellow and rose coloured variations. Select your diamond carat weight, colour and clarity from a wide range of quality options. This elegant setting allows light to pass freely and uninterrupted through the side of the stone revealing the crystal clarity of your diamond. Falling away on either side, knife edged shoulders flow towards the comfortable 2.5mm court shaped band, perfect for everyday wear. The Sonnet engagement ring design benefits from a practical setting height approx. 5.5mm from the finger and can be created in approximately 3-4 weeks of placing your order. We will create and deliver your ring, made to your exact specifications, beautifully presented with the addition of a reputable diamond grading certificate and insurance valuation. Within your box, we will include the presentation box and pocket box—perfect for a surprise proposal. 

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. Excellent cut diamonds can be provided upon request.

Free UK Finger Size Tool ?

We will send you a free UK finger size tool. This very handy strap style sizer will make it much easier to work out your finger size. We will put this in the post same day with immediate confirmation this has been sent. This useful ring sizer is without any obligation to make a purchase. 

Order your free UK ring sizer

Do you need guidance?

Get in touch for friendly, helpful guidance on regular engagement rings and on 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

How does my engagement ring arrive?

Within the United Kingdom, each completed ring from our extensive diamond engagement ring collection beautifully packaged and sent by International Signed For Delivery, by Royal Mail. We insure all parcels until they arrive with you. Deliveries arrive next day after despatch. All parcels arrive under plain wrapping. Inside you will discover a sturdy outer box, containing a document section with 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 

Interactive diamond sizes - see how your diamond sizes appears 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. 

Photographed example of our engagement ring packaging for clients across the UK. Engagement rings are sent in luxurious packaging with 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) on most items. Our diamonds are sourced directly from diamond polishers worldwide and rings are meticulously crafted in our workshops before being sold directly. 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.