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A unique unheated 6.06ct teal sapphire, elongated cushion cut centre stone, with 4  tapering diamond oval side stones. All set in recycled gold and platinum. Designed by London based engagement ring designer Antonia Guise.
A  3/4 view of a unique unheated 6.06ct teal sapphire, elongated cushion cut centre stone, with 4  tapering diamond oval side stones. All set in recycled gold and platinum. Designed by London based engagement ring designer Antonia Guise. On a white background.
A man opening a ring box revealing a unique unheated 6.06ct teal sapphire, elongated cushion cut centre stone, with 4  tapering diamond oval side stones. Designed by engagement ring designer Antonia Guise.
Designed by London based engagement ring designer Antonia Guise. A unique unheated 6.06ct teal sapphire engagement ring in its box alongside hand drawn original designs for the ring.
A teal sapphire, one of a kind, engagement ring, designed by jewellery designer Antonia Guise in it's ring box.

A + A

A testament to A and A's shared appreciation for the extraordinary, this bespoke piece was born from A's desire to create something genuinely unique - a ring as distinctive as their journey together. The heart of the design is a rare, completely natural and unheated, 5.05ct teal sapphire, sought out specifically because A knew A would appreciate both its unusual beauty and colour, and the fact that no other exists quite like it in nature.

The architectural setting, with its thoughtful interplay of 18ct, recycled yellow gold and recycled platinum, draws inspiration from their shared love of modern art collecting and A's keen eye for interior design, recently expressed in their home renovation. Like their carefully curated home, this ring balances contemporary sophistication with timeless elements, creating a piece that tells their story through every considered detail.

Start your Bespoke Journey

To begin creating your unique, personal piece simply fill out this form and Antonia will be in touch to schedule a consultation call.

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Made in England

Every piece of Antonia Guise jewellery is made by hand, in England, using 100% recycled metal and our talented team of Goldsmiths, who specialise in quality products, responsible standards and are paid fairly for their amazing skill.

All the metal used in our Bespoke Jewellery is recycled and any stones are sourced from dealers with the highest ethical standards. Our Diamonds dealers all adhere to the Kimberly Process and our larger Diamonds come with GIA certificates. 

About Antonia

At the our helm is Antonia, an ex-Costume Designer who brings a distinctive touch to each creation.

With a background steeped in the art of crafting narratives through costume, Antonia infuses every Bespoke piece with a rich tapestry of inspiration, ensuring your jewellery reflects, not just elegance, but your unique journey, personality and Story.

Black and White Image of one of our workshop employees working with moulds in the workshop
Portrait of Antonia the founder and designer at Antonia Guise wearing a white shirt and looking to camera

What our amazing clients say about us...

The whole process with Antonia was a total 10/10 and I couldn’t recommend Antonia Guise more. Let me be honest - starting out I had a less than zero knowledge about diamonds, rings or where to even start and it felt pretty overwhelming. All I knew is that I wanted to create something really special and personal that would mean a lot to my partner, whilst working to a budget that made sense for me. Fast forward and after the regular consultation & design sessions and collaboration with Antonia, we’ve designed a bespoke, one of a kind ring that we both absolutely love. It took all the stress out of the situation, I ended up loving the process and I can now tell you the difference between an Emerald and a Radiant cut.

Josh

Amazing service from start to finish with a very personal touch. Having no experience buying anything like this, I was walked through each step by Antonia and given very honest and accurate timelines. Both her knowledge and skill are clear to see from the outset. Would 100% recommend to anyone looking to design the perfect engagement ring.

Charlie

Just wanted to say the biggest thank you for designing the most beautiful ring!! The ring of my dreams! I am so happy and beyond grateful. I can’t stop looking at it.

Natalie