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The Bespoke Service

Create Your Bespoke Engagement Ring

Create a one-of-a-kind custom engagement ring that reflects your personal style and love. Our bespoke service lets you choose every detail — from the centre stone shape and carat weight to the metal and setting — ensuring a unique piece that's truly yours.

Why XII

Our Guarantee

Certified Diamonds

Assured quality and authenticity for every diamond — IGI & GIA certification available on request.

Handcrafted Design

Every detail handcrafted with precision and care by our London atelier.

Worldwide Shipping

Fully insured shipping across the globe, wherever you are.

Recycled Metals & Eco-Friendly

Crafted with recycled metals and eco-friendly, responsibly sourced diamonds.

The Process

What Happens From Design to Delivery of Your Custom Jewellery?

We make customising jewellery simple and enjoyable. First, we understand your style through a quick consultation. Then our designers create detailed sketches and 3D models for your approval. Once you're happy, our skilled artisans craft your unique piece using the finest materials — stunning, high-quality custom jewellery made just for you.

A XII jeweller hand-sketching a bespoke engagement ring design at the workbench
Step 1

Sketching the Dream Design

One exciting aspect of the bespoke journey is the design concept presentation. Here we show you thorough sketches and 3D models of your personalised engagement ring. This lets you picture your ideas and make any required changes.

Before we proceed, we want to be sure the design makes you absolutely happy. This cooperative approach ensures that your ring captures your own vision and style — every element painstakingly created.

A jeweller measuring a loose brilliant cut diamond with calipers
Step 2

Selecting the Perfect Diamond

Creating your own engagement ring depends critically on choosing the ideal diamond. We walk you through this process, clarifying the four Cs — cut, colour, clarity and carat weight.

Our specialists are dedicated to identifying a diamond within your budget and tastes. Whether your style is a classic round diamond or an unusual fancy cut, we make sure your choice accentuates your own creation.

A craftsman setting a diamond into a ring at the bench
Step 3

The Production Stage

Your custom jewellery comes to life in the production stage. Our talented craftsmen create your unique engagement ring using modern methods and premium materials. Every item is painstakingly checked to make sure it satisfies our exacting standards.

From diamond setting to polishing the finished piece, every action is executed precisely and deliberately. Our dedication to quality guarantees that your ring is not only beautiful but built to last a lifetime.

Two finished oval diamond engagement rings displayed side by side
Step 4

From Vision to Reality

Custom jewellery is especially unique since the journey from vision to reality shapes everything. We take great pride in turning your ideas into beautiful objects.

Once the design is complete and the ideal diamond has been chosen, our artists begin the process of creation. From the setting to the finish, every element is painstakingly crafted — wear your custom engagement ring with pride, knowing it truly reflects your style and story.