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Bespoke & Custom Design Engagement Rings
Design your own engagement ring with our bespoke service. Working closely with our jewellery specialists, you can create a custom piece tailored to your exact vision. From selecting the perfect diamond to incorporating personal details or heirloom stones, we guide you through every step of bringing your dream ring to life. Book an appointment to begin your bespoke journey.
Discover Our 3 Carat Diamond Rings
Our 3ct diamond engagement rings span a variety of shapes, settings, and Pragnell design styles—from the sculptural Regency collection to the romantic curves of Antrobus. Choose from brilliant cuts, emerald cuts, oval cuts, and pear shaped cluster masterpieces , all beautifully crafted to exceptional standards.
Featured Styles
• Classic Six Claw Brilliant Cut Rings – Timeless silhouettes that place the diamond centre stage.
• Art Deco & Vintage Inspired Designs – Old cut stones and period settings for enduring character.
• Regency & Antrobus Solitaires – Celebrated Pragnell settings that pair sculptural detail with elegant refinement.
• Celestial Cluster Rings – Radiant clusters designed for remarkable sparkle and visual impact.
• Three Stone Rings – A powerful symbol of past, present, and future.
Why Choose a 3 Carat Diamond?
A 3ct diamond is considered significantly large and visually commanding, admired for its generous proportions and stunning light performance. A round cut 3ct diamond typically measures 9.0–9.5mm, creating a beautifully balanced presence on the hand, while elongated cuts—such as emerald or oval—offer elegant finger spanning silhouettes.
Crafted With Pragnell Expertise
Each diamond is chosen by our Pragnell gemmologists for exceptional colour, clarity, and brilliance. Our rings are handcrafted in Great Britain, honouring centuries old techniques while welcoming innovative design. Having a legacy rooted in Stratford-upon-Avon and Mayfair, our family business continues to preserve the skill, ethics, and meticulous attention to detail synonymous with the Pragnell name.
Bespoke & Custom Design
Create a ring as unique as your love story. Our bespoke service allows you to design a three carat ring from concept to completion—selecting your diamond, setting style, and personal details. You may also incorporate heirloom stones or customise one of our existing designs.
Book an appointment to begin your bespoke journey in partnership with our expert consultants.
Experience Pragnell
Shop online or visit one of our British showrooms to discover our collection of 3 Carat Diamond Engagement Rings in person. View each piece with the expert guidance of our diamond specialists, and appreciate the true brilliance, beauty, and enduring craftsmanship on display.
Frequently Asked Questions
Below are the answers to our most commonly asked questions. Should you want to find out more please feel free to Contact Us and begin your Pragnell experience.
Elongated silhouettes such as ovals or marquise cuts often look even more expansive, thanks to the way their length adds visual presence.
Ovals are admired for their refined lengthening effect on the finger, often appearing larger than their carat weight alone would suggest.
Emerald, pear, and cushion shapes are also frequently considered for their characterful profiles and the distinctive way each handles light.
Some favour a clean solitaire for its muted elegance, while others choose halos or bespoke creations that complement the diamond’s scale and character.
Engagement Listing Page
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